Ahh, taking our discussion online are we (yes, we are royal as long as you are an emperor)?
I think it makes sense for humans to contribute resources for whatever they want, even if there are more "needy" needs they will always be there and you can't start questioning everything spent on something other than the most compelling need.
But I don't buy that space exploration will do anything to save humanity and think the whole spend is on a marginal wow factor for nerds (hasn't been interesting to the general public in decades). We can learn a few things here or there but the argument that this is essential to the survival of humanity is not something I buy. I just don't buy into the space colonization dream.
That being said there are a lot more wasteful areas the government spends on, like the military spending. The US spends at least 10 times more per year on the military, and I personally don't believe that halving the military's budget would put other nations' military any closer to the US.
I'd much rather spend more on space exploration (or fiscal responsibility for an even better idea) and reduce the military over-spending.