When I was in my teens and early 20s, there were women in their 30s/40s who I found attractive. It's common to be physically attracted to an older woman.
Having sex with a substantially older woman is a decent experience once or twice earlier in life, so long as it is a casual sex arrangement and it doesn't prevent you from getting with a woman near your own age. Older woman-younger man arrangements tend to be shorter term. There might be a way to seduce a 35-42 year old woman as an 18-23 year old man.
In life, time is finite and it's difficult to attract big age gaps. Women are at their physical peaks between 18-25 and it is easiest for a man to attract these women while he's under 30.
If you really desire sex with 30s/40s women, the best time in life to do that is during your 30s/40s. Have sex with 30s/40s women who are slightly younger than you are. As a 37 year old man, it is easier to have sex with a 34 year old woman than a 21 year old woman.
There are women who will find it validating to have sex with a man young enough to be her son. It makes them feel better about themselves. There are 35-54 year old women who are very into sex with 18-25 year old men. Find a way to find them. They are more difficult to find as the typical 40-45 year old woman isn't seeking sex with a college aged man.
I agree that as a rule of thumb, age gap escapades tend to be shorter-lived.
That being said, the longest-lived sex arrangement I had was with the 45 year old married woman I mentioned on my last post. I was 23 at the time.
On the other hand, other than escorts, every 20-something woman I've had sex with was a one night stand.
I lost my v-card at 20. The last time I had free sex, I was 29. In other words, the non-escort sex I've had all took place during my 20s. My free sex included:
Two 22 year olds.
A 48 year old.
A 54 year old.
A 24 year old.
A 35 year old.
Two 42 year olds.
A 45 year old.
Even in my 20s, a majority of my free partners were over 30. Sounds like I missed the boat (as far as getting with a lot of younger women when I was under 30).
I totally agree a 37 year old man would have an easier time getting with a 34 year old than getting with a 21 year old. But here's the thing: Even at my current age of 32, I don't exactly desire a 34 year old woman (I'd take sex from one if she offered, but I prefer 45 and up).