To Finish or To Frog?

Last Spring I began knitting a cowl out of sock yarn… which is exactly as tedious as it sounds.  I chose this pattern because it’s supposed to look awesome with variegated yarn, but I’m not sure the effect is anything to write home about.  Also, I don’t even wear cowls.

So, all of the above signs point to frogging this beast.  But… I’ve already put so much work into it and I’m halfway there… and someone I know would surely wear it.  Right?  Are these just excuses we tell ourselves?  Or valid reasons to slog on?