I was single for a long time before that special person found me and I got married nearly 5 years ago. One thing I learned is that you don't have to wait for any man to ask you to marry them before you start doing you and living it up. Take care of you. Learn to love yourself and work on whatever it is you need to work on about yourself BEFORE getting into a serious relationship. If you have some serious issues that are holding you back from life (baggage), get into therapy and work them out while you're single; focus on you first and when everything is worked out or even while you're working things out, the right man for you will just show up. You won't even have to go looking. So buy that house, that car, save your pennies (as the current economy is showing us), take trips, spend time with friends and family, and just do you to the fullest! When you get married, there is so much more on your plate (whether you have kids or not) so you need to focus on yourself right now because you may not have the time you need to focus much on yourself after marriage and possibly children.
So if a man asks you why you aren't married (and I used to get this all the time and was down right sick of it!), tell him you are doing you and that you have everything you're supposed to have at this time.
Oh and if you never get married or you don't want to get married, that's fine too. Having a man does NOT define who we are as women. A man can add to your life but he is NOT your life and you can have a life on your own, just maybe a different kind of life than that of married women. Most days I love being married and other days I would just love to be doing me...all day....every day!