Do people become less interested in making friends with age?

I think once people get into their 30's they start to settle down and/or have children. they just don't have the time or need for new friends. Also people become a bit more cynical, closed off and less trusting of others.

The long work culture we have and the long commutes don't help, as people don't have the time always to socialise after work.

Saying that there are people who are interested in making friends as they age, but its finding these people. Really to meet others you have to be pretty active in alot of activities. Not everyone has a hobby or interest they want to pursue or the time and energy to pursue them.

I have heard ppl get sexually bored of their spouse after few years so, it's possible they also get bored of old friends, for several reasons link to time or things they stopped sharing.