Ejection seats have a far longer track record of saving aircrew lives than TCAS. Does your "civil aircraft" have ejection seats fitted? No?! How can you be so unsafe!
Not so clever for helicopter pilots - the RAF ones I flew didn't have them either. Tsk.
To be fair, only one side of the equation needs TCAS - as long as the other pilot squawks something it at least gives an alert in one cockpit out of the two aircraft.
And by the way, most TCAS units have audio alerting too so it's not essential to have eyes inside for long. Of course, we all know that steely-eyed military pilots can take in so much information at a glance inside, that a peep at the TCAS screen can be done in a fraction of a second. Or get their back seater to do it for them.