Ramadan isn't about starving yourself for God. You don't go pale or have transparent piss from malnutrition, your stomach rumbles when you smell good food but that's about it. Ramadan is more than a lack of food intake, there's no sex, no smoking, no drugs, it's about avoiding sin and doing good deeds when you're at your weakest physically and mentally.
People fast for different reasons, it's personal. Some fast to build will-power and self-control, some to relate to homelessness and starvation, charity, devotion, etc. I personally don't fast to please God, I think there are more important things for him to care about, like rapists, terrorists and mass murderers killing in his name. I participate to better myself and relate to others. As long as you try to be a good person, the rest is optional (imo).