I know one
Curtis who goes by
Curt and one who goes by
Curtis. I think it's avoidable for a while. But eventually
Curtis will have his own opinion. So if it's going to bother you if your
Curtis chooses
Curt, then it'd be better to avoid the name altogether. It is, after all, a fairly logical and obvious nickname.
As for liking the name. Hm, not really. But I can appreciate it's use.