First time I ate horseradish was at the first seder I was invited to. I was the only gentile there and was asked to grate the horseradish. I understand where the oy vey in Yiddish comes from. When I asked the hostess, "So how come I'm doing this" she replied, "You get to take home the leftover pastrami." It was worth the tears, believe me. That lady could cook brisket like nobody's business.
I've been a fan of horseradish ever since. It's even good with vanilla ice cream. Trust me.