I think ideals set us up for ultimate failure.  NOT in all things, but primarily in whatever premise you set out to achieve proof for.
Maybe as long as you realize and acknowledge said failure, or possibility thereof, it's ok.
I guess the key would be to have Realistic Ideals. Be a Realistic Idealist.
Like, it would be Ideal if everyone "woke up" to see some or all of what they have seemingly been blind to.
However, it's probably quite delusional to think that would ever happen. Hell, it's probably delusional to think even 1% of 6 billion would buy into it.
But then again, is that the goal. I don't think so. I think it is to offer vision, or, the chance to have vision, or to be aware of the "Ideal" of vision. Those who wish explore the "Ideal", those who don't continue on their merry way. Perhaps some those who explore the "Ideal" of vision say, "Eh, I'm Okay" and also continue as they were.
Am I making any sense or am I just muddying the waters? Because I've been pretty good at that lately in the offline world.