Is donating sperm spiritually and morally questionable?

Okay, so on Facebook I had posted the status “Want a baby with a birthday on 11/11/11? The best conception date is on 2/18, so put on some Barry White and get busy! ;D”

And one of my friends said that he was a possible designer sperm donor, but that “I couldn’t live with the spiritual and moral complications that come with kids out there who I don’t know exist. This is when I went to a music conservatory in NY. They were specifically looking for good/talented African American classical musicians of various instruments and backgrounds. The money was tempting though.”

Is there anything morally or spiritually questionable about donating sperm?