Something is wrong for you to get a flat nearly every day. Have someone look at it with you. I ride lightweight tires with no protection, and I don't get many flats. Is there a lot of broken glass on your streets?

And stop buying new tubes. Carry a spare and change it on the road. When you get home, patch the tube, and use the patched tube as your spare. Carry a patch kit, too, in case you get more than one flat on the road.