A disclaimer: I am currently a 24-year-old second year graduate student who went straight from undergrad to grad school. I have conducted tons of my own research, gotten almost perfect grades, and am equal to all my (older) cohort members in terms my clinical skills.
I absolutely hate when people make blanket generalizations about individuals who went straight from undergrad to grad school. Everyone is entitled to do what they wish, and I don't think either one (taking time off or going straight to grad school) is more appropriate than the other. It really depends on the individual, so what follows is my response to you, a person who seems to have a chip on his/her shoulder about those of us that COULD get into grad school straight from undergrad due to our hard work and sufficient experience that we garnered NOT going out and partying, NOT saying a B was ok, and those of us who SOUGHT OUT extra research experience all the while maintaining a perfect GPA.
Anyway, I could not disagree with your post more. It is appropriate to say that YOU needed to take time off, but I think implying to other people that a program is of lesser quality because they want to take students straight from undergrad is rather judgmental. I am your age right now, I assume we graduated the same year; however I would argue that because I came straight from undergrad does not mean I am any less mature than you are. I would argue that perhaps I am a little more mature, as I have seen through 2 years of experience, that both types of students are equal in their abilities, professionalism, and interests. There are individual differences with everything, and making generalizations like that does not showcase this maturity you have gotten in your 2 years off. Does taking such a short amount of time off REALLY give you significant amount of life experience? Yes, maybe if you took 5-10 years off, sure. But 1.5/2? Are you all that different from a 22 year old? I dont get it. I'm not buying it.
EVERYONE struggles with grad school, 22 year olds, 30 year olds, 35 year olds. You name it, grad school sucks. Anecdotally, I actually have noticed that my friends who have taken time off (although enjoyed having some time away from academia) tend to have a more difficult time dealing with the stressors of school, research, clinical work, and living on the small stipend. Of course if you are no longer doing things you may get rusty, and living on 30-40k a year as a research assistant is a lot different than living on 13k a year as a grad student. I never knew what it was like to live the 30k a year lifestyle, and thus I experience a lot less disappointment and stress.
You said yourself you are APPLYING, that does not mean that you have any idea what being in graduate school is even aboutit is not about how much time you took off, it is about how much you can handle as an individual. Regardless of if you have worked in a lab with grad students, or you talk to people on SDN-- graduate school kicks you in the ass, and there is aboslutely nothing that can prepare you for that.
In addition, hearing from my adviser this cycle, I think not having overly specific research interests can be a positive (at least in my program it is seen that way) to some professors. Some faculty members prefer to have students whom they can mold, who will likely be willing to help with other's research, and who are open to new ideas. Again, I'm not buying your assertions.
Perhaps your disappointment does not truly stem from younger students being considered, but the fact that they are just as qualified and have just as much experience as you do.