There's nothing wrong with a positive attitude towards future, right?
If it's not a believable future, it may not resonate much. I find TNG too sterile and artificial to be inspiring; if anything, I think something like In the Cards from DS9 is more heart-warming and meaningful - even in the darkest moments, you can find something to make you smile. Plus I always had the sense that TNG's utopia was limited to a pretty small bubble - there was plenty of crap going on outside it.