And me, because I have to administer Windows machines on a daily basis. If only OS X or Linux were used in enterprise, I would have a much easier life (and my fellow sysadmins too). 90% of tech support complaints I get are about viruses or some error only Windows machines can get ("my Windows update stopped working error code 0x0008bfawhatever").
They do use Linux in enterprise.
And your dreaming if you think that Linux admins do not have their share of issues.
If your machines are getting viruses, or your letting your users run updates/install 3rd party software you have failed in the setup of your network/rights. You will encounter the same issues with OS X.
We allows certain users to have admin rights on thier machines, the caveat being that we do not support their machines if they install software and break things, we will just refresh the machine. Every machine has virus/malware software installed.