There are so many reasons to make our own products such as this.  First, there is a huge monetary savings.  Perhaps that alone is enough to want to go the homemade route. 

Secondly, it takes less time to make it than to shop for it, especially if you consider the time you have to work to pay for the product.  For us, it takes much less time to shop for base ingredients than to shop for all the end products.  There must be at least a bazillion thing I'd rather be doing than shopping!

Third, making things at home  you can eliminate all the ingredients you can't pronounce, the unnecessary dyes, scents or other ingredients to which you may be sensitive, or anything else you just don't want on/in you person. 

Well, you get the idea!  There are a lot more, like eliminating packaging waste, animal testing, yada, yada.  But mainly it's CHEAP and EASY!!