I probably won't be able to study abroad is time constraints, cost, etc.
You're only young once, so why you would not want to travel or study abroad makes no sense to me. There is no law that says you have to complete all of your pre-reqs by the end of your third year so you can take the MCAT and go right into med school from undergrad.
If, for some reason, you are telling yourself you'll travel once you're a physician, I honestly feel sorry for you: when you're older you're less adventurous and you have more money. Yes, having more money takes a lot of the excitement out of travel because instead of taking the less worn path (because its cheaper) and organizing your own adventure, you'll most likely book a travel package where they ferry you from one touristy site to the next
Here is why you should learn German and study abroad:
--Have a melange and sachertorte in Vienna and take in the beautiful architecture and analness of the Viennese
--In Berlin... well I can't really say what I want because I'd probably get banned, but lets just say the post-unification architecture is stunning
--In Hamburg... see above
--Visit Cologne for Fastnacht (Mardi Gras/Carnival) and the Haribo factory in Bonn
--Visit a spa in Baden and see Stuttgart
--Get crunk in Munich and see the amazing museums
--Go skiing in Switzerland
However, if you are still dead-set on not studying aboard I would not learn German: you will never interact with a German speaker outside of Germany/Austria/Switzerland who does not already speak English. Another thing, studying abroad gives you the opportunity to further your grasp of the language; simply taking the classes will not provide you with all the opportunities to truly because fluent and understand the language. If you have any questions PM me