Microsoft invested a huge amount of effort/time/money into CLR to give us tremendous capabilities. I have been told by someone close to the SQL dev team at MS that they are tremendously disappointed by the lack of adoption to the point they significantly curtailed planned efforts to make CLR even more robust. People like CELKO spread misinformation and outright lies about CLR to prevent more widespread adoption. Why they do such a thing is a guess, but I think it has something to do with not wanting to learn new things due to being stuck in the 80's (or 60's as the case may be.) This may seem harsh, but I think it's fantastically unwarranted to lie on a forum that's supposed to help younger developers get the truth about SQL Server.