Considering you didn't spell pilots correctly i'm going to assume your infomation is questionable. Yes pilots leave..... it happens. It's called staff turnover. Generally in my experience pilots leave in groups to australia or the middle east.
PS propburner - i've just had a look at all you recent posts. 90% are related to putting Aer Arann down. If you work for them... Leave. If you have a gripe with them... take it up with them. You obviously have an issue with them.
I wish them ever sucess now and in the future.