ex remote locking cars A. "now I dont have to touch an internal button" B. "now I have to always use this other button from 10-15 feet away---multiple times if someone is walking within the 15-20 foot range"

1. you're still just pushing a button
2. you're training yourself to not lock the car while touching the car, so now you're inclined to forget if you pushed the button
3. in paying to support the car manufacturer's idea of convenience you're creating more moving and proprietary parts to re-pay for later

conversely you do get the [curb'd] benefit of signaling racism and/or suspicion. the irony being that you've become comfortable waiting 10-15 feet to actually secure the thing