I've definitely seen more males with an interest in using online dating sites less for serious relationships and more for casual dating and/or hookups. With that said, from time to time you do hear of wonderful long term relationships and marriages coming from online sites.

There's nothing wrong with meeting people online, but there's no reason why you can't try looking in person as well. Just don't be surprised that you'll run into way more guys just looking for something casual on a dating site.