What is the tradeoff with uber/lyft? I still get where I'm going but it's often cheaper, more comfortable and just as fast (or faster) than previous options.

I don't see how accuracy is going to be a problem. These people aren't driving across the country with hundreds of items and it would be very much in their interest to make sure the right thing is delivered to the right person.

I think the "experienced professional" of a shipping carrier driver is vastly overrated here. Just what, exactly, do they do that can't be done by another part-time person?