Re your final question:
Ask a pilot flying passengers how he copes WITH the hosties!
Cargo flying is more enjoyable from my point of view but it is not everyone's cup of tea. If you are low on hours I suggest you try passenger flying first. You will find out about hosties first hand; you will also accumulate flying hours at a much faster rate.
My advice would be - only turn to freighting once you have got the other stuff out of your system, thats what I did and I've had a lot of fun doing both.