Nope, it doesn't bother me at all. I'm 30 now, and I definitely like my life better now then when I was 20. I like gaining experiences and more confidence as I get older. I'm not a super athlete, so I haven't noticed any slowing down physically as I've gotten older, and I don't care too much about getting wrinkles and going grey. So, waiting for each year to unfold to see what the future has in store for me is pretty durned exciting.
Although, I may think differently when I'm *horrors* 34.