Maybe we could have a new vote on here... "Who would drive if they could rather than struggling with FGW▸ ?".. I for one would vote yes (if parking in London wasn't so expensive..) I'd not worry about the wear and tear on my car..
You've just answered the question then, If parking in London wasn't so expensive, which is why you use the train!
Mind you, for ^2800 pound (I just paid something like that out for my season ticket), I could probably buy a parking space in London....