Whoa there...please don't disparage an opinion if you cannot argue against it. No disrespect, please.
I understand your argument that knowing another language might save time (for the record, I'm fluent in one foreign language and highly conversational in two others). However, when the need for a translator arises, you can see other patients while waiting for the translator before seeing that patient. There are ways of saving time.
In case of trauma or acute illness, one does not need more than the basic sign language for a doctor and patient to have some communication. I've been a hospital (in a different country) where not only did the doctor and patient speak different languages, but their nations were mortal enemies and the doctor was able to communicate with the patient as needed.
Here's an idea: In my urban area, there are significant numbers of Spanish-speakers, Russian-speakers, Far-East Asian-speakers and Italian-speakers. You can't speak them all...my suggestion is that each of us have a basic knowledge of the language of our ancestors who came to the U.S. For example, if you're from a Chinese background, have a conversational knowledge in Chinese etc. etc.. Even a true-blood American whose ancestors fought during WWI (just an example) can learn a language of a different culture in which they've had some interest. With the ethnic variability in many areas, we'd have many bases/languages covered...
Ok, that was quite off-topic, I'll stop talking.
Medicine:
There are no translators in poor public hospitals, as far as I can tell. There are barely any in more affluent hospitals. In some areas theres a list of which nurses speak what, which is great in Miami where every third nurse is the son or daughter of Cuban immigrants, but where I'm at in Louisiana the nurses only speak English, so that's no help at all.
Now we do get a decent number of patients who speak languages other than Spanish. What do I do with them? Pretty much what I described earlier: I use their relatives, I use sign language, I google translate and then hand them the sheet. My last H&P with a vietnamese patient took f-ing forever, had to be done through an incredibly shy 12 year old girl, and was missing a lot of potentially important information (which, if I was a physician, I would be liable for). Oh, and better yet, it was an Gyn patient, so I had to triage and decide which questions were worth tormenting my poor translator with. "Any vaginal bleeding?" fine. "How many sexual partners in the last year?" Skip. Hope she doesn't swing. If there's a way to save time here I'd love to know it.
Now you're right that there are many languages you could learn. However the fact is I run into Spanish more than all the other languages combined, and as a multinational Romantic language with some germanic influence it's one of the easiest languages to learn. So, since you can't learn all languages, I think this is a good choice.
Politics:
As for the suggestion that everyone should just learn english, I think most people try. Almost everyone can speak a few basic words and could probably understand directions to the bathroom if I said them slowly and loudly. Most are a little better than that. However the issue is that most people are (by definition) of average intelligence and if they're immigrants they're also normally of below average income while working more than average hours. Meanwhile learning a language takes time, money, and intelligence. I learned Spanish by spending 5 months in a full time language academy with a class size of 3 in South America. That was the only thing that could get me fluent, and I'm a f-ing fantastic student. Top 1% of the nation.
BTW, unless you're Enlgish/Irish/Scottish odds are your ancestors had them same problem. My Polish Great Grandmother never learned English, her kids just had to translate for her everywhere. There wasn't a time when new Americans all came over knowing how to speak English.
Finally, I'm just going to say, I really like my immigrant patients. On average I like them more than my native born American patients. They seem much less likely to play Gameboy while I'm in the room, angrily demand vicodin, or involve me in workers comp claims. They are much more likely to listen politely, follow medical advice, and ask what they can do to get back to work. There are exceptions to every rule but in general I really have a hard time feeling angry at this group of patients for not speaking English, or to not want to help them.
If you could offer me a 25th hour of the day exclusively for learning Spanish, I'll take it. Otherwise, I'd rather spend whatever free time I have doing...well, more important things. ;-D
Leaving aside the fact that one of your more imortant things is apparently arguing with an unknown Louisiana medical student on the Internet, this thread is about someone asking what he can do in the downtime before medical school starts. That's two full months of 25th hours.