Is marijuana more potent these days

Many claim marijuana is growing in it's potency by altering strains to achieve the highest possible THC amount that the cannabis plant can produce. These does seem to be true by cross breeding and other methods that alter a particular strains potency level, but many argue that one can only be so high on marijuana unlike other substances and even if the THC content is on the rise per individual plant this means the average marijuana smoker will just smoke less. This cannot be said about many of the hard core drugs, In most case's by doing more it effects you more and the addiction to do more compels users to achieve that higher state. Marijuana research over the years proves people who use marijuana have no such want or desire to become more high from their average and is also less addictive by the way. Anyone claiming to have withdraws from marijuana is just using an excuse to put off their behavior for what ever reason has changed. Your body produces natural cannabinoids anyways called endocannabinoids so one can never truly withdraw.