Does volume matter?

I drink most evenings. Not every evening (thank god), but most of them. I know i probably shouldn't, I know it's not good for both physical and mental health, but I do anyways.

I think I comfort myself with the fact that it's not tons and tons of drink though.

My average night of drinking is a ten pack of cans, equating to about 4 and a half litres of 4.5% cider. I know that's a lot, but I don't think it is pisshead territory (yet). But I still feel with the fact I do that 2 to 5 evening a week, that it is still too much.

So, I suppose my question is, does the volume of a specific night matter, if you think you do it too frquently?