The worst is talking to someone who is new, and week 1 they nod over and over as you explain why they should try a bunch before buying. Then week 2 they show up with a $3400 gun that they bought that afternoon and talk about how they actually went to buy XYZ but it wasn't in stock at Kittery so they bought this instead. Cut to 6 months later and you can't remember exactly when they stopped coming by to shoot.
I've experienced that almost exact scenario in both pistol and rifle shooting with new guys. They went out and spent a ton of money on stuff they really didn't need and expected it to make them a great shooter. Then they found out how difficult it actually was to put the bullet where they wanted and all their high-dollar equipment didn't make much of a difference. Then we never saw them again.