Just because you find it fun to go through earlier instances to get gear doesn't negate the fact many only go through them to gear, if you want to go through earlier raids nothing is stopping you from doing such, you don't seem to understand that. Just because you can catch up to raid b and skip raid a doesn't mean you can't do raid a if you don't want to.
Because you don't like it you think it should be taken out is just like the people who want LFR gotten rid of because they don't like it.