How old is too old to live with roommates?

I have been living in a fraternity house for the past 2.5 years and about to graduate in a week. I am going to move into an apartment with 2 of my buddies, that's the plan anyway. I am 23 right now and I don't see me living by myself for at least a few more years (until I am 25-26). Obviously women prefer men who have their own places but how old is too old to still live with roommates?