I think the older, more established you are, the easier it would be to wait for WAS to come around.
Not really, because the older you are the more you feel the clock ticking. At 30 you could give up a couple of years and still easily meet someone, marry and have 40+ years together. Me? Every year that goes by is greatly shortening the time I have left to spend with someone else. I feel that standing for years at 50+ is a much greater sacrifice than for someone in their 20's or 30's.