The time was the big one for me. When I was a kid it was worth my time to return a shit ton of empties. After graduating college and getting a career not so much.

The deposit wasn't really the limiting factor, moreso the calories. Prior to cutting regular soda and beer we had plenty of empties and I still couldn't be bothered to take them to the store as it was such a waste of time and huge pain in the ass. I figured my time was worth more than the few dollars but I understand that isn't always the case for most.

Some unsolicited advice for those that it is worth their time, just try cutting the spending on deposited drinks. Water is free and much healthier. Anyone who is even slightly overweight might see a noticeable drop in weight upon cutting it. I know I sure did.