I heard aspartame makes your brain bleed. ha ha, in any case, i stay away from aspartame because its bad for you. but then so is most of the air we breathe. Its like some people allow themselves a cheat day, maybe you can allow yourself 1 soda per week. If your diet is in mint condition, then it wont "hurt" you to have a small amount of soda, but it will def "help" you to not drink any at all. Just like peoples cheat days will help them to not have those days and stick to a completely healthy diet. Sodas have 0 nutrional value.