No, it don't make you a bad person. I think you've used Claire as a vessel for your feelings at times, but I also think Claire isn't above criticism. She often put Charlie in the doghouse or took him for granted and that was inconsiderate in light of everything he did for her.

BTW I forgot to say before, but I loved the line about Charlie appologising proffusely over the "tainted peanut butter". Bless.