Many people find the low-carb lifestyle because they have to, because they suffer from diabetes, obesity or something related to these things.
It’s extremely common in this group to also have a habit of eating sweet, sugary foods – and this can be hard to give up. It’s natural then to turn to artificial sweeteners instead.
The problem is that these sweeteners are not necessarily much better than added sugar: they maintain sugar cravings and may prevent weight loss. Possibly they may have even worse risks, like causing cancer.
Skipping them altogether – if you can – is the best option, especially if you are or have been addicted to sugar. It’s really only a habit – once the sweeteners are gone, you’ll rapidly lose your need for them.