1st off, I hate to see arguing in the forum. We are all here b/c we really like the thing we have in common - the Mazda5.
That said, sometimes, technology is just going too far. This car is by far the easiest I have ever parallel parked. Of course, the CRX did not have power steering, or it would rule supreme. But the 5 has an excellent turning radius, appropriate wheelbase for its track, and moving the car around in tight spaces is a joy. Don't like parallel parking your 5? Come drive my LWB Ram for a week! To be truthful, there are cars that just don't need it. This includes the new Focus. I agree: if you can't park it, leave it in a lot and walk.
Of course, I suppose that what the OP meant is backup sensors. I have my own opinions about that, too - particularly that all those little dots in the bumper are really ugly - but I suppose that with the relative height of the windows and the smallness of the rear windows, that they could be useful.
There: compromise.
But as has been said above, I think it mostly comes down to price point. In Europe, the vehicle competes with a whole slew of similarly sized MPVs that all offer near-lux features. Here, the same features would push the price to the point where it would be competing with stripped-out full-size (mini)vans, and I suppose that often it would lose the comparison based merely on interior space.