I shed no tears for the imminent demise of both the Labour and Conservative parties. Long predicted, the time has come when their abandonment of actual members in favour of big donors and their becoming brands rather than mass-membership movements means they are no longer sustainable in their current forms. UKIP remains critically important as guardians of Brexit - any resiling from the vote, and the next election will be won by an overwhelming majority of Brexit MPs. But right now, there's only one UKIP MP.
However, whilst all this is going on, there is no effective opposition to government in Parliament, no effective scrutiny and a much diminished rein on wayward ministers. PMs these days bribe their own parliamentary parties by handing out junior ministerial posts like Mr Cameron hands out MBEs - and those not yet appointed will be on their best behaviour with hopes for a future government job as junior Farmed Fish minister at DEFRA or some such.
When we last had the option of changing our electoral process, I came out on balance for retaining FPTP for reasons that made good sense at the time - and taking the long view rather than reacting to short-term electoral injustice. If we had some form of PR now, I suspect UKIP and Corbyn-Left radicals would be elected in equal numbers, together with the existing 'soft' centre left and right parties, a handful of greens and a much reduced number of Scot Nats. It would be I think the end of one-party government and the beginning of permanent coalition.
I can't really object to moving to unstable governments, compromise policy and the vulnerability of ministers to Parliamentary approval because it means keeping government in check. A conservative government with no parliamentary opposition to keep it in check may threaten me less than a Labour alternative, but I still don't like it. And as I don't think either Labour or the Tories can heal their internal divisions without schism, I now support looking at PR again.