Avira
appreciation takes different forms
I didn’t understand the question so much as referring to the being alone part (perhaps I misunderstood it). More to the self value. As you mentioned “A single man can join a learning program or get himself involved in community activities” While no doubt hard, a single man can earn a name for himself as the baal koreh, he can give a shiur, daven, get a “position” as a gabai. There are a lot of ways to “make a name for himself” of course not everybody is capable of those, these are but a few examples. my point is there are more ways readily available to contribute to the community for men than there are for women
Though the being alone part too is a little easier for men since by going to shul/shiurim they can develop a community, which of course lends itself to meals