How a pilot operates a plane has many variables. COST is one of them especially if yr hiring the machine, time is money so an intersection dep is purely to get going & not waste $$$.
I was told back in the early days by a few instructors that think about the terrain ahead immediately after leaving the confines of the airfield when deciding how much rwy to use. Plenty of open flattish area's take off with adequate rwy on the day to suit the conditions, built up area ahead & zero places to land after T/off go right down to the end of the rwy & even stick ya tail over the barbwire fence as that old saying applies here, the rwy behind you is useless in the event of an engine failure!
The use of common sense has been overtaken by $$$$ in all walks of life especially aviation, we all live by the might dollar & we can die by it to.
Wmk2