But how many guys want to settle down again after 20+years of marriage and being single for only 16 months?
Depends on the guy and why the marriage broke down. My ex jumped back into a long-term relationship 9 months after we split (after a previous failed daing relationship where he figured out he didn't want to raise someone else's kid, I think). He's an extrovert and hated living alone and probably figured out pretty quickly that being single and dating wasn't all it was cracked up to be. He married her and they've been together now for 9 years I think.
I think guys who were previously in pretty good marriages (even my ex, who left) look to recreate that. I know guys who were widowed tend to remarry sooner than women.