Joomla vs WordPress

In case you didn't know, I use WordPress to run this website. I used to use Serendipity but I had tons of problems with it. It seemed that a lot of larger sites used WordPress without any major problems. While I was doing my research on various software products, I came across joomla. (I was even thinking of buying hostgator joomla webhosting at the time.) However, I couldn't find anyplace that used joomla successfully. Even now, years later, I can't decide if I made the right decision. Then again, I'm a little weird like that. I always second guess my decisions. I've never had any problems with WordPress...I just always wonder if joomla might be better.