I eat a lot of sweeteners, but no sugar (sucrose, I still enjoy fructose). The great thing about artificial sweeteners is that they are mostly not as sweet as real sugar and what's most important to me, don't leave the horrible sour after taste that simple carbs do.
These days most things people consider normal are too sweet for me.
As for sugar being evil. It is, for varying definitions of evil. Its biggest problem is that it's just a lot of calories packed into a small volume, so you don't realise how much you've eaten. Surprisingly, once you abolish sugar, it becomes difficult to fulfill your daily calorie needs. When strenuous exercise is involved it becomes downright impossible.
If you don't care about calories, then surely you care about energy fluctuations. Foods high in sugar will give you an instant rush of energy that abates quickly. This leaves you hungry and sleepy, leading to a cycle of being hungry all the time even though you've eaten enough calories.
For instance, I read a study (that I can't find a link to right now) showing that eating oatmeal for breakfast leaves you feeling full hours longer than eating regular cereal even when controlled for calorie intake.
PS: especially for the reasons of those energy spikes, I aim for a low glycemic index diet rather than just a no sugar diet. It tends to describe the desired result better.