If it's not causing you any emotional pain or life troubles, then you probably don't need to see a therapist. You're one of the lucky ones.
However, many people in the CD/TS spectrum aren't so lucky. We either struggle with guilt, shame, or depression; or we're not sure how far things go and we're uncertain how to proceed; or we are in situations where spouses, parents, or others are causing us emotional pain. For us, therapy can be a helpful support unit.