I think it's like this. For most other essential and non-essential uses, Mac is pretty nice to use. But there are a few things that requires Windows because there's no proper Mac equivalent. The person would like to stay in the Mac environment, though. This is where Parallels comes in. It fills a very good niche.
In my case it's for those pesky sites that require Internet Explorer and my cellphone whose PIMS sync capability requires Windows-based proprietary software.
In my case it's for those pesky sites that require Internet Explorer and my cellphone whose PIMS sync capability requires Windows-based proprietary software.