Tacomas through 2004, and 4Runners through 2002, are impossible to find, and eye-watering to buy. People love them for their reliability, agility, and utility. This creates a demand that supply can't meet, so they're pricey and hard to find. People keep them long after they really don't need them anymore because they can't bear to part with them, and they know they're a hot commodity. My sister was one of those people, but finally, and tearfully parted with her 2001 Tacoma in 2012. She listed it for over Excellent KBB value and her neighbor snapped it up before she could even entertain other buyers.
They have a cult following, if you want to call it that. The truck's reliability surpassed any other car my sister has owned, with the exception of her current vehicle, a 2015 Highlander. But she's not 11 years into ownership yet, so we'll see how it compares in a few years. This is how lifelong Toyota customers are created. Personally, they have nothing in their lineup that appeals to me, but millions of (other) people must have a point.