Should I sell platinum key, or use it myself?

I currently have a good mining set, using the Epic Pickaxe.

I can make around 1 Platinum Key in one hour. Should I use it myself, or should I sell it?
This question gets even harder because the platinum key is approx. 1,5 gold keys, and is worth as much as 1.5 gold keys (6 World Locks).

Well don’t use it, unless your ready to regret not getting a pocket watch, but I think if you’re a pro you might get enough gems to cover the loss of a platinum key

Last time I was doing something with mine keys, I ended up selling them cheap and lost 30wls…

Sell them yes. If you want pocket watches by rng based then do it.