I have heard that weed from the 70s era only had ~2% THC where now at least dispensary grade can hit 20% to 25% THC. That could well be due to the drug war selecting for more powerful highs in smaller packages, but i would think that would also reduce the quantity needed to get the high you want.
I have been using cannabis for decades (with the exception of breaks lasting from a couple months to a few years).
Unless you count idiotic teen behavior, I have always thought a little bit is enough. It keeps your tolerance low and prevents burnout.
I usually just do it before bed but I usually like to do an activity (game, book, writing, quiet chore) so getting completely faded is pointless. Quick few vapes while out with the dog and I’m good.