I am new to Gulden and from what I have come to know is that it is just another coin used for payment. Don't we have bitcoin and other tons of clones to be used as payment?
It's a coin used for payment that is ALREADY BEING USED by hundreds of stores all over the Netherlands and other Countries (mostly in Europe), that as a great dev team (really), an amazing founder, and there's also the fact that people from the Netherlands doesn't like Euro and really wants their own currency back.
This is the perfect story, it's just a matter of time till Gulden takes over Euro as the most used currency in the Netherlands, and then you can guess what will happen
It will take a while, of course, but Gulden is stable, and has been released since 2014! It's an almost 4 year old coin that just keeps growing, that's amazing.
And I didn't even mention Pow2 + SegSig update that is just around the corner...