Raise your hand if you'd marry some random person off the street the day before your 30th birthday just to be able to say you got married before you were 30.
*crickets*
It's not like you FAIL AT LIFE if you haven't gotten married by a certain age or haven't had a baby by a certain age or haven't bought a house by a certain age.

If you're closing in on 30 and you haven't met the right person, there is no need to marry some loser just to put a check mark next to the "got married by 30" line item in the life script. Plenty of people get married after 30, and plenty of people never marry at all.
It's your life. Do what's right for YOU.