I grew up under Thatcher, looked on with disbelief in 1983, 1987 and 1992, and celebrated with almost everybody in 1997. Then they attacked single parents, loaded the NHS and schools up with PFI debt, failed to reregulate the banks and deliberately reinflated the housing bubble. Inequality continued rising and the Tories supported them every step of the way.
Voting for the least worst option means you end up with no good options. Do what you feel you have to at the ballot box but don’t pretend it means anything. If you won’t fight them, you’re helping bury us all.