Well as a man in his forties, I can confirm that age doesn't matter.

When I was 17 or so, I had a 2 year relationship with a woman in her late 30's and it was great. In my mid thirties I was involved with a girl of 21 for 5 years and this was amazing. Now I am in my 40's and I have been seeing women in their 20's, 30.s and 40's.

Age is not an issue at all. It is all about how well the people get on with each other. The little kind of magic that sparks between 2 people.

my opinion is that there is no ideal age gap/difference for having good sex.i had mind blowing,toe curling,finger licking good and honest crazy sex with a guy half my age.just as i had good sex with a guy around my age.
i think an important factor is that when your young your keen to explore and try new things and usually your free.then when reaching your 30s+ many of us are single again and looking........hint the chances are that age gap 10+ meets, i think it's just a chance that you meet your ideal,compatible lay.of course if looking for a steady more meaningful "relationship"again it is totally different matter.
if it feels good your doing it ride

It is a proven fact younger men are better in bed. We reach our sexual peak at 19 while women reach it at 30 or so. Ideal sex partners would be a 19 year old man and a 30 year old woman. Younger men have more stamina which is the key thing for good sex. But, as men get more experienced they learn to please a woman more and to actually outlast a woman on occasions.

Well I can confirm that as I've got older, I have certainly gotten better in bed.
Yes, men learn how to please and indeed, can outlast a woman occasionally, but as for stamina? I don't know where it's come from but I certainly have more of that than I used to!

I think as you get older, the gap becomes more flexible. but younger ages (17 upwards) should stick with no more/less than 4/5 years.

I went with a girl 20 years younger than myself, it lasted 4 years, but what a great 4 years it was

Age should be no barrier amoungst consenting adults,

well my ex bird was 32 and my ex before that was my age i still loved banging my ex ex but the 32 was good!