Using components as interfaces?

Before I knew about interfaces, I have been using components to essentially do the same thing. For example, I would have a health component, that would take care of any damage or healing. Rather than having classes implement IDamageble or IHealable, I would simply check to see if a gameobject had a Health script attached.

Can people with experience with Unity tell me upsides or downsides of either? Should I switch to using interfaces instead?

I think I got the answer I wanted from the discussion. Thanks guys, seems like there is no hard convention when using an interface or component are both doable. :slight_smile: