Yeah but at the same time while they are running around looking after the family and what not.. you have concentrated on yourself and will be far better equiped to handle those things when they come your way! It doesn't worry me that I may hit 30 and still be single... would worry me if I was still living at home but the main question to ask yourself is.. 'Have I had fun'? And if you have then none of it was wasted.
My auntie is 55, has been married twice, been engaged, been dumped, dumped people, had a series of relationships, some serious.. some not so, never had children, has a good job, has sturggled with money, has got her own home.... and now..... she is 55 single (doesn't look a day over 47 though) and lives alone with her dog and thats the way she loves it! Now she takes the attitude that men can come and go but as long as she has her friends and he independence.. none of it matters!
So it doesn't matter what you collect along the way... it's what you have at the end that shows where you have been!
"It's not how you got there... it's how you end up" :o)