Yes that's a great one. I've had them in my Best Services Sector list for a number of years (link below). The chart is starting to look somewhat frothy, but it's been one of those long term buy/hold type stocks.
Even with solid long term stocks, investors still need to diversify. A couple of my favorites had recent blowups - Stericycle (SRCL) and Flowers Foods (FLO). It's a lot easier to ride out the turmoil when there are 30 stocks in the ETF. I actually have 4 custom ETFs, with 30 favorite stocks in each -
I can relate to that, having spent a number of years as a biotech 'investor'. I finally concluded it was best to just follow the sector out of general interest and keep actual money out of it. I remember Buffett saying the 2 rules of investing are 1) don't lose money, and 2) don't forget rule #1. I figured that one out the hard way..