No, I am not a man trying to date someone 20 years younger than me.
However, if you must know, my DH is 11 years older than me we have been married almost 9 years now and have two DCs - and I am very very happy with him.
I notice that you started off by complaining about men 10-15 years older than you and now you have stretched it to only complaining about a 20 year age gap, you are moving the goal posts here.
I would very much agree with you about a 20 year age gap.
However, I would suggest that perhaps, in real life, it is relatively easy to come across men 10 years older than you that you would find attractive. It's just that you wouldn't know they were that old and so you wouldn't already have mentally written them off.
This is a real problem with OD and being able to filter by age, height, weight etc.
When you see an age on someone's profile a lot of people, I am sure, make assumptions about what they will be like. However, if they met in real life, that person wouldn't be carrying a sign with them giving all their vital statistics. So, you wouldn't be looking at them as a 45 year old graduate blah blah blah, but you would just see someone that you liked the look of.
It would then only be quite a bit later that you might find out that he is actually 10 years older than you say, because you don't generally go round asking someone's age on a date, certainly not a first date - well, at least I never used to.
And if you stayed round long enough to start asking him questions like how old he is then I'm guessing you will have been on a few dates with him by that stage and find him at least a little bit attractive.
Finally, so if Daniel Craig or ( insert name of some other man) turned up you'd refuse because they were 10 years older?
ps I just mentioned attitude as you come across to me as being angry that a man might choose to be with a woman who is not the same age as him. I really don't understand that attitude when talking about something like a 10 year age gap as you were doing initially.