Is drinking while at home alone some evenings, because you “don’t have plans” the following day… ominous behaviour?

I’m by no means an alcoholic. But I certainly enjoy alcohol. I now regularly find myself getting in 4-8 cans on any evening, where I happen to not have plans the next day and so don’t have to be up early or leave the house. This only happens twice a week at most, due to work, however is this a normal behaviour?