Thanksgiving is awesome and Christmas is fun.
Why worry over the bad parts? Enjoy it for what it is.
I just don't feel the good parts outweigh the bad parts. Particularly since I'm not a fan of what is traditionally considered the 'good parts' of these holidays, such as the food, the overeating, the travelling and organizing large family get-togethers during a busy season, buying gifts, receiving obligatory gifts, overspending, decorating.
Even if there was no associated 'themes' that were being imposed on the holidays, the actual events associated with these two holidays are not enjoyable to me. Having a 'set day' for -everyone- to do these things all at once is also a real hassle and causes problems of its own.
The fact that society glosses over these problems with the associated moral themes just aggravates me.