Hi @crypto.piotr, I'm not very good at curating nor have the time for it so I prefer to delegate out my SP, so I can't really comment on how profitable curation is. I suspect it will be even more profitable after HF21 when rewards are split 50/50 which is an increase in favour of the curators.
There are many uses for SP other than curation, such as ego and influence from having alot of SP, trying out what it is like to be a dolphin before investing fully into SP, used for games and apps who require resource credits to send memos, custom json, make comments, upvotes, run bidbots, run a central community account that supports niche authors, using the SP to have enough RC's to claim steem accounts etc.
Hope this helps.
Dear @thecryptodrive
Thank you for your kind and prompt reply. Appreciate it.
ps.
Since you're so responsive, I thought that perhaps I could share with you my latest publication and ask about your own opinion on discussed subject:
"DID OUR WORLD LEADERS JUST PUSH GLOBAL RECESSION AWAY from our doorsteps?"
https://www.steemit.com/economy/@crypto.piotr/did-our-world-leaders-just-push-global-recession-away-from-our-doorsteps
I would appreciate it greately.
Yours
Piotr
That's a great article I voted and commented.
I appreciate your kind words @thecryptodrive :)