Four years ago today we took a risk and bought a Tesla. We certainly weren't the early adopters, but our car was one of the first 25,000 Model S's sold (something like that, maybe closer to 20,000 for those counting) and we felt that it was a risky move to go from the established makers that we had been happy with to try out something new. So we took a ride to the factory (Fremont is just down the road from us), took a test drive and bought a P85 on the spot (green, in fact).
Maybe we got lucky, but we never had a single problem with the P85. It was expensive, but it had perks that really mattered to my wife, who has to commute in Bay Area traffic. It wasn't hard at all to go from gas stations to plugging in.
We then upgraded to the P85D when it was first announced. It's an amusing car and we still have it. We're well over 100,000 miles combined on the Model S's and have had no real problems (other than promises made about features that didn't quite come true).
The next car won't be a Tesla, and probably will be an ICE. Lots of reasons for this, but primarily we're just bored with the Tesla. Totally a personal preference, as I'm incredibly impressed with how much Tesla got right with its first sedan/mass market car. It's truly amazing and revolutionary (though it has some serious limitations, which likely will be resolved sooner rather than later).
I wish Tesla would have focused more on making significant improvements to the Model S (interior, features, exterior design) rather than delving into things like semis, but it ain't my company.
Overall, I'm very happy I took the risk.