I've got a question for EssentialPowr and any other pilot flying TCAS equipped aircraft...
How often have you personally received a "TCAS" climb or descent? I had two last week. The first one was when we were being vectored for the approach at FTY (Atlanta - Fulton County) We were in marginal VFR conditions. A yoyo in a Bonanza wasn't talking to anyone and busted Atlanta's Class B airspace. We saw him coming and started the climb just as we received the RA. We never saw the second one and have no idea what type of aircraft it was. We were flying into Knoxville and had to "get in line" to fly through an opening in a line of T-storms. We were descending out of about 15,000" - solid IFR - and, all of a sudden, there was another idiot squawking 1200 at our altitude and we got a RA to climb. Like I said, we never saw him and center had no idea who he was. They were tracking him, but I have no idea if they ever figured out who he was.
I have only had one other RA in my life, but I have heard a few called out on the radio. If I get too many more of those I think that I will simply pull the breaker on the box. After all, what you can't see can't hurt you.