As you have said with another bunny you would be able to have it insured. However there is still a £50 excess to pay for each insurance claim. Would you be able to afford this if the new bunyn had the same problems as Cherry does?
I think you know best and it must be really hard as single bunnies can be so lonely. I think people are just shocked, if they actually read the whole thread I am sure they will see why you are thinking of having another bunny.