[amyjess]

> The line isn't "your thirties."

> The line is when you graduate college.

I agree with this, but with one caveat: it's a slow process, and it takes years to fully take effect.

The process of your friend groups disintegrating does indeed begin with your college graduation, but it takes so long for the effects to be really felt that a lot of people don't realize their friend groups have disintegrated until around the time they hit 30.

[ntsplnkv2]

Yes for sure, it isn't sudden. I think right after college people "settle down" at different times. Some marry early, some later. Marriage and kids are huge time sinks. By 30 many are married. The more that are married means less time for friends, and slowly those "groups" wither away to the most important.