Then your expectations would be incorrect! Lots of people want help flying their planes, and lots of people want to help fly them. Indeed, lots of people happy to pay their share of costs to fly them - the CAA even have legislation to cover this.
The short answer is that doing this is a great way for a non-owner to get some great flying for a fraction of what it normally costs.
If you don't like it, then no problem - but you'll miss out on these sorts of flights. At least the choice is there to be taken or left...