They done the same with alochol, wine in particular. The average alc. vol were: 11/12% however common bottles are now up to 15/16%. My aim to drink is to mellow; not to get drunk.
Same when I have a smoke, unwind and relax not end up on some other planet blazed out of my head for the next few hours.
(downvote why?)
I used to enjoy a bit here and there years ago, but as I got older, lost my tolerance, and everything got stronger, I simply can't handle it without feeling entirely too intoxicated. So instead, I just abstain rather than risk the anxiety and discomfort that often come with even one puff of "modern" cannabis.
I'm hugely worried that we've yet to really study the long term cognitive effects of heavy consumption and will see a number of ties to immediate (anxiety, lung and heart inflamation) and long term (dementia, etc) affects.