I'm in my 30s and a number of my friends are married. We had a double date with a married couple today. We attended their wedding a couple of years ago too - they got married in matching kilts it was very cute.
Yes I have quite a few friends who are married, it's not uncommon now for me since I am in my 30s. I'm very happy for them, I've been to a few of their weddings and hang out with them occasionally even though I am quite single.