RE: Am I Old Fashioned!
sharing costs is pretty standard in my view.
Now if they come to GA and stay with you, aside from offering you some meat, what expenses are you looking for them to share? personally I'd buy the group some steaks/dinner one night etc..., but if I invite someone to stay at my home I certainly wouldn't be looking for any cash etc, but I do think it's polite /common curtisy to pay for dinner, or something along those lines.
Traveling out of state with someone I think definitely means sharing the cost of gas, now if someone else's car broke down, I wouldn't be paying for repair bills to their vehicle, nor would I expect a friend to pay to fix my vehicle. Now if I was low on cash, or we needed to get ont he road, giving me a loan is another thing.