Long Distance vs Short Distance Delivery Work, & Fatigue OTR

I've got my CDL A with tanker endorsement, but no CDL A experience. I drove school buses and charter buses for a year and a half. I have no accidents, incidents, etc... on record, and I've driven various delivery jobs before I got my CDL as well.

While I like big rigs, while I'm good for the 14 hour work day, I understand after doing YT research and talking to truckers about dealing with warehouses, shippers, receivers, problems on the road, etc... the main thing that doesn't appeal to me isn't the rude people, it seems like that's every job I've ever had, but it's the driving 10 1/2 hours, nearly straight there with nearly no stops or breaks, or to be honest with you even 8 hours straight (I understand you've gotta take a 30 in the 8 hours). My stamina level right now is probably at 5 or 6 hours then I'd need 1 hour to get out and stretch, but in long distance driving in my car, I usually take a break every 1 or 2 hours.

I've got the tanker endorsement and think that a delivery job in propane or delivering fuel etc... I could do very well with, but most all of these require at the very least 6 months experience, maybe rightfully so hearing people's experiences out there even. I'm okay with early mornings and long days, but I prefer the stop and go, stop and go, stop and go over and over throughout my day, and I like the cold too, it wakes you up. I can't understand how so many truckers can stay sitting for that long without getting extreme fatigue, I'd rather run locally and be up and out of the seat every hour pumping fuel, so that's one reason I got my tanker endorsement.

In looking over a starter company, they say they'd hire me, but you go out with a trainer over the road, and when reading people's experiences one student described driving 500 miles in a day with the trainer. Personally, this seems like one of the main aspects that's not taught, honestly can't be taught (too expensive all that fuel) in a classroom, and honestly something that, call me weak, I don't think I'd survive too long in. If I started out in an OVR company, I'd request for smaller distance loads to start and build up my stamina over time, if that's even possible.

Over the road and traveling the country part does sounds appealing, but it seems like the difference between local, regional and national delivery is night and day, and confuses me that to get into the industry you'd have to do regional or national work before switching to local. That doesn't seem to benefit the starter companies either, because it's encouraging a high turnover rate and disloyalty for those that would want local work. To be honest with you, I'd also rather not just use and abuse a starter company just to get a local job in a year.