Can i use May please???

people have totally forgotten the existence of usage of the word "MAY" in the
english language except for the month "May"....
noticing people even so-called big bulls replacing can for may is disgusting..y
dont ppl understand the difference between the two...one involves one's
capability while the other is one's requestition.ppls should have had english teachers like i had to drill this fundamental
usage of words into their muddy heads