Well, I guess we're all different, but in almost 25 years of aviating, I have flown tankers (VC10), pax (744), freight (74C) and pax(A320) and without doubt, freight was the least enjoyable flying I have ever had.
You can be away from 2 to 12 days, and rarely complete a pattern without a change here and there to your roster. Some people hate it, others don't. I hated it!
Hope that helps