The clinching factor for me was anecdotal experience. My father has a 2009 Highlander Hybrid. He bought an extended Toyota warranty, thankfully, for 6 years.
At 5 years, 11 months, and 1 week the SUV died in the middle of highway traffic while going 110km/hr. Power inverter blew. We learned the inverter is built into the battery. Repair and replacement cost? $11k. Thankfully, covered...but only due to the extended warranty.
While its a 6 year old hybrid system -- and I'm sure Toyota has improved the design in that time -- we're still on the 2nd generation of the technology as a mainstream design paradigm.
Its the same reason I avoided the entry level German sports sedans (bmw 3 series, audi a4s) -- they're now using turbo V4s, and I'm sure those will have numerous growing pains. The A4s have oil consumption problems ever since the redesign in 2009....they STILL haven't resolved it.
A mature, reliable, powerful v6 was a much better strategic choice at the time of purchase. I also appreciate the extra trunk space.