I'm a maniac about time management and do everything possible to not waste even a moment of the day (e.g. if I'm doing any trivial physical activity, I'll be listening to an audiobook at 2x speed). However, I would never want to get rid of eating. Since marrying a French woman, I've come to understand the importance of enjoying what you are eating...we aren't simply machines that need to be fed.
$4 dollars per meal is expensive!! My wife and I eat for the 2 of us on less than that in a day...and we eat fresh tuna, organic rice and loads of great vegetables. Just walk through the fresh produce section of your local supermarket...the cheapest stuff in the store and the healthiest is in the produce section.
What time has wasted in all of this exposure to inexpensive, healthy nutrition? None.
One of the biggest wastes of time in one's life is being sick and the other is early death. While I can't speak much about the latter, I'm sick once per year at the maximum and I have not had a debilitating sickness for the past 4 years that has prevented me from working, studying or coding for even a moment. I attribute much of this to my wife's refusal to eat food that is crap.
Maybe that is why the French are healthier...they don't try to reinvent the wheel and replace the thousands of healthy, inexpensive and delicious items that already exist for our pleasure...food!!