I think one of the mistakes that beginners make is trying to find THE BEST gun. Instead of trying to find the gun best suited for them. And usually you see ego get involved when beginners are doing this - they want the "best" and if the Navy SEALs use it then it must be the best, or if more police departments use it then it must be the best, if it won the Army trials then its the best, or if such and such competitive champion uses it then it must be the best.
A lot of time spent on turning up factoids to boost the argument of the bestness of their chosen firearm, not a lot of time testing things out to see what fits them the best or what they fire the best.
They don't want to go through any process of learning, trying things out and testing things. They're like a kid at Christmas. They have their heart set on one particular gun for whatever reason, they have cash burning a hole in their pocket - and they go out and buy it.
A lot of time spent on turning up factoids to boost the argument of the bestness of their chosen firearm, not a lot of time testing things out to see what fits them the best or what they fire the best.
They don't want to go through any process of learning, trying things out and testing things. They're like a kid at Christmas. They have their heart set on one particular gun for whatever reason, they have cash burning a hole in their pocket - and they go out and buy it.