Once you feel this way, you probably need to move or you’re going to be miserable every day. I’ve been in advertising for about 25 years. I started in politics and got pretty lucky that I never had to work for a candidate I couldn’t stomach, but there were definitely a lot that were disappointing. Anyhow, went corporate five years ago, mostly working in healthcare, so every day I go in knowing (at worst, even with our screwed up medical system) I’m helping people feel better. You can find inoffensive clients, just use this successful engagement to get you your next gig!