You're assuming women are 50 times more likely to want to be a "sensible life partner" which isn't true, in my experience. Maybe it's just my age category (early 20s), but women and men alike aren't concerned with settling down.
Plus with the advent of online profiles, I don't have to go on 100 dates to figure out 50-90 of them won't work out. so if 1 out of every 10 dates I go on is a winner, and it takes me a week to set up those 10 dates, then it is still better than for a guy to spend a month setting up 10 dates, of which due to small sample size, there's a lower chance of the let's say 2-3 sensible life partners appearing.
Plus with the advent of online profiles, I don't have to go on 100 dates to figure out 50-90 of them won't work out. so if 1 out of every 10 dates I go on is a winner, and it takes me a week to set up those 10 dates, then it is still better than for a guy to spend a month setting up 10 dates, of which due to small sample size, there's a lower chance of the let's say 2-3 sensible life partners appearing.