To save money for sure. Because it’s fun and rewarding, true. But also tobacco plants grown at home produce a healthier tobacco for smoking.
Tobacco you buy in shops contains chemicals, chemicals that make it taste better. Chemicals that give you a hit quicker. Not to mention the preservatives, which maybe safe in food, but when smoked ..well. You can work out the rest.
We call these Government approved tobacco because throughout the Western world governments allow their partners in the tobacco industry to adulterate their tobacco with any one or more of over 1,000 extra ingredients.