I think it really depends on where your hometown is. Is it a small town where everybody knows everybody and will be all up in your business all the time? Is it an urban area? That all makes a difference, because I don't think you would enjoy living in a small town with your family nearby -- because of your concerns that they won't respect your independence. Of course, wherever you go, you do need to be able to say NO when people are trying to take advantage of you.
That said, I couldn't imagine not living near my family. I live about a 40 minute drive from them, and for me that is perfect. I can go visit them whenever I want, and I know that if they ever need me I will be here for them, as they have been there for me my entire life. They NEVER impose on me and have never stopped by unannounced (which really I wouldn't even mind). I guess my point is that it really depends on your relationship (in addition to whether you like your hometown) -- some parents are fine to live near, and some are just overbearing -- if you have the latter, it may be best for your sanity if you live somewhere else.