Of course parents are responsible for their children's safety. I say, "no" to my two-year old daughter 1,000 times a day, so believe me, I am aware of that issue.
A TR receptacle is a 'passive' device that is 'on' 24/7. It will deter/prevent/reduce the likelihood of a small child getting shocked/burned. The risk isn't 100% eliminated, but it is reduced significantly. To me, the cost/benefit ratio is well over on the 'benefit' side. When my daughter moved from her crib to her 'big girl bed' there was an standard outlet right next to her bed. I took it out, and put a blank face plate on it. When I replace it, at some point (no real need to now) I'll put a TR receptacle in.
You can't keep your child forever in a risk free environment. You can protect them from preventable injury, however, while at the same time rigorously teach them about the dangers around them.
