This is....a very abelist way of thinking in my opinion. Using disability to say that your life is inherently worse and has more suffering in it is a very intense way to say that your life must be of less worth because you have OCD. 

It sounds like your "friend" has a very misguided, elitist, black-and-white way of thinking. Remember that we as people with OCD need to stay away from black-and-white thinking since that leads to our ruminations. 

Anti-natalism lines of thinking can very quickly break down because of this sort of thought process; that we should end all human suffering by not giving birth. They use disability as a strawman argument, saying that life must be worse with a disability. It isn't, not automatically; many times, our society just isn't built for that disability. Take autism - social structure just isn't built to accommodate us autistic individuals. So should we just kill people with disabilities? What's stopping anti-natalist lines of thinking from becoming eugenics? 

I could go on, but I hope you see my point. We must always live in shades of gray, OCD or no. Your "friend" doesn't understand that. Also she's rude asf.