I judge differently based on the age of the younger woman. When people are older, I'm less judgmental, but I definitely raise eyebrows at 20-something women with men over 40. Both at the women & the men! I immediately assume the man is having a case of arrested development and the woman just wants money & security. When I was 21, I dated a 32 year old and I was "so in love" with him. I'm quite sure he wasn't with me, but at the time he was wonderful and treated me well.
Now I'm 34 and DH is 33. If we were ever to not work out, I would definitely consider dating a man 10 or 15 years older. I'm not discriminatory when it comes to thinking they're attractive, lol.