I've sought it out as an option, but "Boys" stuff is generally cut for someone shorter than I am - significant enough that it's an issue. Even the 16s and 18s are just not right.
It's frustrating because "Mens" generally isn't produced in my size. I have a lot of luck with older clothing though - size 34 was produced more widely in previous decades.
I've found some modern clothing marketed as 34, but men's clothing has fallen victim to vanity sizing, too. The "34" I have from a modern company could easily be a 38 and is way too large for me. Older clothing tended to be produced to fit more snugly as well - the "36" I have from ages past is a bit large but is workable and the 34 is perfect - even the 34 I have from the 70s works.
Nowadays men's clothing is cut too large for the stated size and American companies' cuts are especially boxy and unattractive on just about anyone.
If you're looking for something particular, go by measurements, not stated size.
Men's clothing from Asia tends to come in smaller sizes due to population averages. There are some nice fashion/trendy type items to be had if that's your thing.