Distance to the range and time, I guess. I'm a member of a great club with an awesome range, but it's an hour there and an hour back. I also have to drag every damn gun I own with us, or they whine at me. All the ammo cans of all the different calibers too, think there's a dozen. Plus all the peripheral crap that I can't seem to do without, targets, stands, gun rests, trash bags, beverages, snacks and cooler, etc., etc. And if we're shooting cans and jugs full of water, there's always a buttload of those.
When we get around to going, we try to make a good, long day of it. It's usually windy too, which wears you down. The club range has a bunch of separate, individual ranges of various lengths, and we can usually have one all to ourselves as long as we want.
Not to mention schlepping all the guns and ammo cans up from the basement to the truck, and then back down again. Bleh, that part sucks. I'm working on a plan to keep at least the ammo cans and most other accessories in the garage, locked up.