10 Hands, down 18 BBs - I quit for night? NC

[Master5hake]

I had sat down at my PC with an 'open' night ahead me, GF working late, blew off some buddies going out, and was psyched to multitable for 4-5 hours of uninterupted poker bliss (something I don't get a lot of, once a week maybe, and something i really look forward to)

It started with posting in LP with J6s - 4 callers - ended up with an outside str8 draw and 4 flush on the flop - lost to a higher flush on the river yadda yadda yadda - ran into a higher set - AKs nut flush on turn runs into a boat when the board paired on the river - the usual [censored] no one wants to read about -

the point of the post is while I play at a level where the money doesn't mean much to me (other than keeping 'score') and short term results do not bug me -
tonight I just quit after one orbit after these three hands and was done for the night -

anyone done this before? I feel dirty