There are multiple other systems that provide greater reliability at this point, although not necessarily the same range of devices or sophistication in automation options. So it depends on what your own priorities are. The trick is to find the system that meets your needs and interests.
As I’ve mentioned before, I myself moved all of my mission critical use cases off of SmartThings almost 10 years ago now, and it has not yet achieved the stability I would need to move them back. I don’t expect anything to be perfect, but I do want the same MFOP ( Maintenance Free operating Period) that I would get from a typical home appliance like a dishwasher or a washing machine. So a minimum of six months and preferably a year. I’ve never been able to go more than two months with SmartThings without something breaking. 
On the other hand, I still use it for some convenience use cases, because they are often on the cutting edge of some interesting stuff, such as Matter right now. I find all of that interesting and the conversations around it interesting. But I can’t trust it with my everyday automations yet.
(For one thing, because I have to pay someone else to do almost anything physical, even just popping the batteries in a sensor to reset it, I need to be able to postpone updates until a day when I have a tech savvy helper available.)
Anyway, I feel your pain, and I share your frustration. But if you do have a need for reliable (if possibly simpler and potentially a bit more expensive) Home Automation, there are choices available.