Nick Clegg didn't "do it" as you put it, for me but the way the Conservatives acted in coalition did.
I still think this is the Reality Show view again. Nick Clegg voted out because he didn't make being the junior partner in a coalition work as if the party was the senior partner. Reality will strike eventually in this country; I just wonder what damage will have been done by then.
The Liberal Democrats in parliament revolted over the raising of the women's retirement age some signing an early-day motion. Yet again let's look at the reality. The Tories had the weight to get it carried through.
So objecting to these things why still support the Tories?
I'm not sure about the point of your Dad's age but mine would have been 103 by now. He and I both joined the SDP without mentioning it to one another until we were both going to the inaugural meeting in our area and I am sure he was right to support what he believed in even if they were unlikely to be the "winning" contestant.
Mum, just to round this off, would have been 100 if she had lived until last November but sadly she died in the February. She voted to remain. I don't think, having lived for many years in Germany, directly after the war, including in a nearly wiped out Hamburg, she would ever have thought not working as a group was a good thing.