We've always bought used cars, but the rise in the price of used cars entirely changed the calculation for us. Not only were the cars we were looking at much more expensive, but our own car had also increased in value. Add to that my own judgement that we're approaching a tipping point for electric vehicles and an offer of 0% PCP financing from VW, and we took the plunge on a new ID.3. Took them 6 months to deliver but they honoured both the trade-in quote and the 0%.
Ordinarily, I wouldn't have bought a new car on a PCP. My thinking though is that the problems in new car production and the likely continued rise in demand for used--particularly electric--cars make this a unique situation, one in which today's new EV is likely to retain a lot more of its value in 3 year's time than it otherwise would have. There simply won't be as many used cars in the 3-year-old sweet spot. Add to this that the government subsidies for new EVs may be reduced in the future, which is likely to increase the value of used EVs.
Anyway, this could all be wrong and there may be lots of other considerations I haven't taken on board. But we're loving the new car: it's like nothing I've ever driven before.