Not really worth fully switching over, IMHO. Compatibility is a definite issue, however, for a secondary computer or a home file/print server, Linux is an AWESOME choice. My old laptop that I mentioned before sucked ass with XP on it, but now with Ubuntu it's been given new life, and surprisingly, more battery life. I use it as a somewhat eco-friendly file/print server. Got a 1.5TB drive hooked up to it and a Sammy laser printer for the whole house to use.
