Quicky lube places are always a roll of the dice. You may have good experience for years, but it only takes one distracted or inept "technician" to cause a huge problem. I've known many people over the years who use quick lube places, and every one of their vehicles eventually had a serious or potentially serious issue caused by the business... stripped plug threads, loose and leaking filter, filter not changed, grossly overfilled crankcase, oil cap left off, etc etc...
Yes the lube business will probably fix any problem that they caused, but you will still have a massive headache and loss of time/energy.
I guess it comes down to one's willingness to roll the dice... how lucky do you feel? I'm very happy for the OP not having any issues at WalMart oil change... yet.