Should the Paralympics exist?

I have been just as glued to the Paralympics as the Olympics & Team GB are doing us proud, but do we need a Paralympics? Why don't we just have have the Olympics & grade them to ability of athletes? Or is it that people are worried that the rounds with the disabled competitors won't get watched as much as the able bodied ones as we don't promote them as much? All I can say is that it is Team GB's Paralympic athletes that are the more successful on the whole as far as Team GB's athletes go, we are not far off the amount of medals won as the Olympic team won for the whole of the games & yet we are only half way through the Paralympics. Something I also found interesting was an interview with Tanni Grey-Thompson, was that it was in her words infuriating & quite patronising to say that they were brave for doing what they do as bravery does not come into it, that there are still rivalries, people are just as competitive & it is just the athletes doing their job. I can't really argue with that as when my mother was in a wheelchair & doing the best to lead a normal life with her illnesses. People with disabilities doing everyday thing are just that people doing everyday things like anyone else. But at the end of the day well done again Team GB.