I had a standard issue Toyota Sienna a few years back. Sold it as upsized to a 2006 3500 GM bus van (large family). Hardly did anything to the Toyota, business partner bought it, still going strong.
The GM van definitely has more problems to fix. And the 6 liter LS burns more gas than the 3.3 V6 did. But upside is, can throw all camping gear and firewood desired behind rear seat, plus tow an enormous trailer. Also more problems equals the kids get more experience working on the thing. The breakdowns are probably a net benefit in the long run from the opportunities for experience they provide. Toyota might as well have been an electric motor, just turn on and go.