We don't have to thank you but we choose to.
Sometimes, it is better to express gratitude for that which you're grateful for.
It not only shows that you're appreciative, it also goes to fulfill the law of showing appreciation for what you have.
An old friend used to say, appreciation is an application for more.
While I do not take it as trade by barter, I believe it is important we do that.
Not to worry,we'll keep interacting and up voting with the little power that we have.

Thanks so much @anomadsoul