Your first point is fair I guess but nothing to worry about really. The up-front cost is virtually zero (just find a friend to agree to do this with you), so if

Your first point is fair I guess but nothing to worry about really. The up-front cost is virtually zero (just find a friend to agree to do this with you), so if your friend wants to bail you could try find another friend. Your second point shouldn't be an issue for anyone who has some level of maturity and/or values their relationship with their friend... not like it is likely to break a friendship but it seems like a dick thing to do.