I have one.
35 years ago I got a double degree: 1) Mechanical Engineering (BSME) and 2) Fine Art. I have working as an engineer since but I never gave up my art, working it on my time off. Through the years, this interest in art turned into a commercial & fine arts photography money making hobby with a very nice customer base. I don't make near the money at art as my engineering job but it does allow me to maintain a studio and buy what ever equipment and material I want in order progress my art. Thus, I call it my 'Money Making Hobby'.
I retire this year from my engineering job but I will never retire from my 'hobby'. It will last a life time. It will keep me young both in mind and spirit until I die. God willing, I hope that will not be soon.
Please forgive me for blowing my own horn, some of my work can be seen here:
www.WaterFireRock.com I am John Guild
Creating art can be self-actualizing; a means of reaching your full potential and discovering you inner self. I highly recommend art as hobby.