I'll give you an example. 15 years ago most people thought being Vegan was borderline insane outside a couple cities and college towns. There were little if any Vegan options at restaurants and if you asked they often gave a puzzled look. It looked hopeless. I can't tell you how many times I've been yelled at and made fun of. But we didn't do it because we knew it would be successful. We didn't do it to be cool. We did it because we felt it was the right thing to do. We had feelings, and we followed those feelings. We believed in something bigger than ourselves. Fast forward to today. Things look a lot different. Just think about the amount of carbon emissions that did not happen in the last 15 years for that crazy ideal? No one makes the world a better place because they know it will be successful. Or even if any of it is going to work. They do it because the care.
Pragmatism can be a dangerous thing when used as an excuse not to try.