This one came out of the sun (Sunward) I believe and wasn’t even seen.
I’m good with the idea of learning about them for the same reason Thomas Jefferson sent Lewis and Clark west but a lot of that research can be done by private entities.
Any asteroid would only be sunward for three months a year or so. The rest of the time it could be spotted.
The bigger it is, the easier it is to spot. This one wasn't that big, it just blew up over a city.