It sounds like you got some good suggestions. As long as your place is flat and the bales are not too huge there are lots of things that are reasonably easy, but if ever you needed an excuse to buy a tractor this is it. It’s always nice to have the right tool for the job, and round bales on hills can be dangerous.
I’m not sure I get why it’s odd to drive a pickup truck in a pasture. The internet has taught me there is all sorts of weird in the world, and that’s probably the least weird thing possible.