It's not that big of a deal for me. I think it took less than 2 weeks to get my card, and I wasn't in a rush to buy anything. I have several guns.
I'm pretty sure the states need some sort of basic requirement to protect their citizens with the background checks. It's federally mandated.
If I'm buying a gun, I've already gone through the checks. Hence, I show my card to the seller when getting the gun.
Minnesotans love their guns, too. Lots of hunters here.