Just to echo the message from other sites that went though beta, voting helps us define the scope of the site and figure out who the experts are. To quote the Vote early, vote often blog post:
Putting voting front and center is very much intentional; it is how good content is voted to the top wrong or incorrect content is voted to the bottom users who consistently provide useful content accrue reputation and are granted more privileges on the site It’s only through voting that a class of editors, closers, and moderators can emerge to help run and govern the site. Voting is how site leadership forms. That’s why the reputation leagues show a breakdown of reputation spectrums.
Just keep in mind when voting that your votes are yours. You don't have to up or down vote something just because others have.