"Extended cab" or "crewcab"? My son-in-law has a 2019 extended taco and they can't put their 3 year (kid, not dog) in the back. They always have to take their huge van.
Myself, I've had all three. A 1979 Datsun single cab, short bed. 1989 single cab Toyota Pickup. A 1986 Nissan "King Cab" (read, extra cab with jump seats). My HUGE F350 overland crewcab and my wife's 2007 crewcab Taco.
My first trip to Australia back around 2000, all you saw were crewcabs and I'm scratching my head thinking, "Why in the world don't we have them in the U.S.?" Lo and behold, within a year, Nissan came out with their first crew cab and everyone else followed in suit. Before that, the only crewcab's I ever had seen, few and far between, were the old Dodge pickup trucks.
I'll never have a single cab again. Everything was always either on the bench seat next to me or on the passenger floor. No place to store anything. The extra cabs were slightly better for storing gear, but only little people could sit back there. The crew cab will always have my vote.
Can't believe I'd sometimes sleep in that little Datsun cab till morning to be the first one out in the surf. (I'm 6'-0", but back then, I probably weighed in at a buck-fifty)