Let's start with the false assumption that one needs to spend more than they normally do to earn points and miles. If you're doing that then you're doing it wrong.
Now let's talk about satisfaction. I for one find it quite satisfying to travel hack my way all over the world. I love staying in castles in Ireland, over water bunglaows in the Maldives, Bedouin suites in Dubai, flying in a double suite on Singapore and drinking endless Krug, taking a shower in the sky on Emirates first class A380, flying to London for the weekend just to see a play, flying to Iceland just to see the Northern Lights and countless other things over the last few years I've been able to experience with "space points". The Maldives/Dubai vacation I did was $57,000 alone. I would NEVER spend real money to actually experience that. Why should I? I prefer to spend real money on other things. The 23 night Antarctica, South Georgia and Falkland Islands trip I am working on will be well over $65,000 and I also will not pay real money to do that trip either. But 15 minutes of my day and earning "space points" as you say, ABSOLUTELY! I don't mind spending "space points" on whatever absurd or seemingly out of reach travel related idea crosses my mind. There are few things more satisfying to me than an amazingly awesome trip that would have cost a lot of money but I got to experience for next to nothing out of pocket.