[fit2rule]

What you are proposing is personal irresponsibility.

But I propose that this is just your desire for personal irresponsibility.

As a user, I'd be quite happy to take a before/after picture of the car seat to ensure that both myself, and the driver, are satisfied as to the state of things during my ride. I see absolutely no issue with this - other than the fact that I have to take responsibility for the seat and the condition, no matter what.

But you seem to propose that riders shouldn't be held responsible for the condition of the car seat after they've used it. I don't think that's particularly ethical, nor great, nor does it improve the quality of service as a whole for all of Ubers riders.