What on earth makes people use git? Especially you, who I can't believe makes these decisions based on word-of-mouth hype and buzzwords? What's good in git?
People use Perforce because it works very well for centralized version control, and that's what a lot of companies need. It enforces user security, integrates with a lot of other software, can be backed up centrally, and has a lot of very good tools. On the other hand, it doesn't scale as well as DVCSs do, and can't be used offline.