I think it pays. For starters, the freezer on your refrigerator is not very good for any type of long term storage, they get opened and closed too much, temperature fluctuates too much, and items stored in that freezer just don't last as long or keep as well. A separate deer "freezer" can be purchased for a couple hundred dollars and will maintain that consistent, freezing temp better. Keep it in a cool garage or basement and it doesn't have to run too much either.
We need the space, as we generally have a couple deer or an elk each fall to process and store, freeze lots of fish that I catch, as well as garden produce. Also by beef, pork, chicken, seafood and other items in large quantities when on sale, break them down into portions, vac seal and freeze for future use. Pull out a couple vac sealed steaks from the freezer, drop them in a pan of cool water to thaw and you can grill them an hour later.
Another benefit is ice, if you do outings where a cooler is used. Freeze a few milk jugs of ice and put them in your cooler. They last about ten times longer than bag ice and are virtually free, since you already have the freezer. Stick back in and re-freeze when done, or drink the chilled water. If you want the ice in direct contact with things like a cooler full of beer, bust up the milk jugs with a hammer, then cut them open for chunked ice. This also lasts a whole lot longer than bag ice due to the size of the chunks.