Good news, we are making improvement.
(weird I already made this point on Another thread today)
While a massive asteroid strike is nearly nonexistent in % chance per year the resulting damage would be nearly infinite.
So .0000001 % chance times infinity is still enormous. The article I read said it was an insurance type probability problem. Same article said just for the yearly price to maintain one McDonald’s restaurant we could fairly well scan, Map and monitor most of the dangerous asteroids in the solar system.
That my friends is cheap insurance.
And you say that because you don't think we are currently doing so ?
Scroll down to "All Sky Fireball Network" followed by "Near Earth Asteroids"