I think you have a reasonable limit of back-up / loaners at one per game class - Varmint, medium game, large game, dangerous game. After that I think you are just collecting. A young friend wanted to shoot my 375H&H today both he and his wife enjoyed the shooting (water filled plastic containers are fun) he wants to buy a rifle. I unfortunately told him the truth in front of his wife -that a 30-06 and an 870 12ga shotgun are pretty much all you would ever really need.
