Is it fair to use ad blocking software?

It's my computer and I should be able to control what I download and what I see on my computer screen, websites do not deserve the right to control what data is on my hard drive nor what I'm viewing, they should be able to control what is theirs and if they don't want people viewing their websites with ad blockers then they can be stupid and stop people from viewing their sites with ad blocker. I think it's silly for people to be forced to download and view things they do not want to and if websites agree with it then it's completely fair. I think I wouldn't visit half the sites I do if ad blockers were banned.