Maybe the misconception is that these crises are exclusively caused by low budgets.

For example, rail transport might be worse in many ways than cars. Or maybe some roads are impractical to maintain, and must be demolished. Or maybe homelessness is a symptom of inequality, and whatever its underlying cause is, large direct payments will not address it.

You can start by learning what the national debt actually is.

And relatively wealthy seniors who spent their social security going to rich doctors.

Hegemony ain't cheap.

I know your last question is rhetorical but consider the work of NASA. Would you call the Mars rovers constructive and meaningful? What about the James Webb telescope?

We also spend a lot of money stabilizing the agricultural market to maintain a steady food supply. Is that constructive and meaningful?

What about all the medical research we fund? Is that worth it? After all that research has led to the discovery of cures for various cancers and has saved lives.

It should also be duly noted that Joe Biden and the Democrat-led Congress has been able to do something that hasn't been done in over 40 years - they got an infrastructure bill passed and it was quite comprehensive.

All your questions, even if rhetorical, point to why elections matter.