So I guess you think disabled people just shouldn't be able to vote huh? This is what's called abled privilege. You can get around easily and so the concept of not being able to actually physically go somewhere hasn't even occurred to you, even though this is the daily reality for thousands of people across the UK.
Not to mention, some people's working hours mean they can't go to the polls on the day of the vote. Additionally, their employers are not obligated to honour any time off requests to go vote. This doesn't even being to account for those people who have caring and family commitments or otherwise that would make it extremely difficult to go vote on the day (do you want to listen to a screaming baby because it's being held up uncomfortably in a queue for hours on a hot day, rather than comfortably in it's crib at home?).
I mean honestly this whole thing reeks of "It's a banana, how much could it cost? Ten dollars?" level of privileged thinking. Your experiences are not universal, nor are they even a good representation of the average Briton's life if these things aren't considerations for you.