as long as you can keep it under control - and
you know you've got it under control then ya should be cool... i do the same exact thing almost - i go out as often as possible, friday/sat nights when work's not crazy, but the rest of the nights, i come home - get out the jack, and have a drink - for me it's just gotten to be routine, i don't let it get in the way of living in general, that's just how i reassure myself that the day's over, i can unwind a bit and chill out.
on the other hand... when me and my ex broke up, i was a fucking wreck. literally, the first thing i would do when i woke up was get trashed, pass out and do it all over again the next day, after awhile you start to feel the effects of it, and you figure out how much of a waste it is to live your life that way, especially over something so stupid (ya might not see it now, but i promise - you will eventually)
so - as long as it's not a means to an end - you're not doing it to be completely senseless, and you're not doing it to fall asleep - and you're not over-doing it, then you're cool man, just keep it under control
p.s. on different note - smoking LOTS of pot did seem to help quite a bit during shitty times like these, not condoning pot smoking - just a thought...