Where I work, we're trying to move away from PGP at the corporate level, we use Zixmail and Voltage :) But yes, it can be handy. Downside is that you need to provide the keys to the people you're sending secured email to.
Actually secured email in general can be a pain, but it's better than being "hacked". Of course not many people use lengthy/strong passwords, and imho it's better to use phrases like "sil3nceIk33ly0u!" than shorter passwords like "iluvmywife" as words are easy as heck to brute force...