I've played through 1 and half of 2. I've also played Demons Souls and Bloodborne back in the day (they're essentially made of the same formula).
I'm not the biggest die hard fan of the series but I'd say that if you can afford the time, play all three of them! It'll be a blast.
We live in a reality where corporation rule the world. They monopolize markets, pay little to no taxes, hold no accountability for their actions against people, communities, the environment. They cut off corners and feed you whatever bullshit is more profitable for them and this endless greed of theirs is only growing.
If you're not stealing some every-day, average Joe's work (looking at you fuckfaces who steal content and resell it on platforms like RedBubble), then piracy is always the (only) moral choice.