Yes, certainly, first because passion for computer can more often than not predate being able to co-make a family. Then like any work, current societies make far easier to get room to work with computers than any other kind of activity one might want to engage into. Finally, other humans don't want to spend none stop time in company of the single same individual, no matter how much they might love them: they need space for there own personal development. Computers will respond tirelessly to any human wanting to interact with them H24, and don't have any extra psychological and sociological need to fulfill.

So on sheer level of time spent on computer, other humans don't stand a chance. Time spend on something doesn't tell much about how much we feel emotionally positively connected with this thing though.