Stevia isn't an artificial sweetener. I grow the stevia plant. The leaves taste like sugar, no bitterness. When you buy it in the store it has been extracted, and is extremely condensed, which can leave a bitter taste.
I do use some stevia drops, I find it has more the flavor of the stevia leaves, but my preference is to use the leaves from the plants I grow. Any time you use a stevia extract you need to use only a small amount.
I prefer my coffee black but because of medical reasons I can't drink it that way now. I have to mix it half and half with milk. The only way I like it then is if I sweeten it just a bit. I use 3 drops of liquid stevia, toffee flavored. It doesn't make it taste sugary, just slightly sweet.
They've been using the stevia plants in asia for over 2000 years. I have been using it for over 10.
Many things contain sugars. It's just a matter of extracting those sugars. Sugar from sugar cane isn't as bad as people make it out to be. It's the sheer amount that they put in things, like a can of pop, that is really bad. The more sugar you eat the more you crave sweets. If you use less sugar you will become accustomed to things being less sweet.
Much as the same with salt. The more you use, the more you crave it. If you use less you will get used to the flavor of foods more, and won't need the salt so much.
Corn syrup, unless it is certified NON GMO is bound to be from gmo corn. Nearly all the corn grown is gmo corn. Organic corn, from heirloom seeds, if grown within 5 miles of gmo corn, will be contaminated with the bees pollinate it. Beet sugar, unless specifically labeled as NON GMO is gmo.
Cane sugar, as yet, has not been genetically modified, but they are working on it.
It is not hard at all to train your taste buds to like things a little less sweet. Just slowly cut down on the sweetener you do use, and you will stop craving it so much.