I think the target audience you are looking for responses from is women so I will not answer your questions. But I did want to share a few thoughts.

Being a man that is somewhat similar to you I would say the following:

I found myself attracted to "older" women when I was in my early twenties and now that I am finally 30 I am just barely younger than most women I date now. As you grow older you may find yourself getting closer to that target group as well.

Age is what you make of it really. But you do want to be realistic in your relationships. Meaning don't date people too young so that you are breaking the law (obvious one but needed to be stated) and if you date someone several years older than you at some point you have to ask yourself if you are comfortable marrying someone and spending the rest of your life with the age gap. If you are then I would say continue on. If not and you just enjoy their presence then you are being unfair to the lady.

And one final note.. Keep in mind that as someone that is more of a "giver" than most I sense a bit of that in you as well. It is a great thing to give everything you have in a relationship but be wary of getting in a relationship where that is only one way. We often love in the same way we want to be loved. So if you are looking at the feasability of being with someone make sure that they are willing to give you what you need as well. If not over time (it may take a year or two) your attitude will change because over time you will begin to feel as if you are being used because she has gotten use to your giving nature without giving in return.

Anyway that is my rambling on the subject.