Because of economic downturn in the world, most people have become jack of all trades and master of non. learning skills and not getting a mastery of them because they are testing waters on which of them will eventually pay the bills. I have a friend who during her spare time learnt soap making, baking, sewing yet she's not making money off these skills.
Learning multiple skills sometimes may not be solely for money making purposes, sometimes these skills are needed for daily survival, you may not have to commercialise the skill but use it to survive at some point in life when it becomes crucial that you apply such for the purpose of survival.
Nevertheless it is still okay to have all of this skills and commercialise them if you have the capacity to because it will not be bad to have a multiple source or streem of income from the commercialisation of these skills, that in itself is a survival skill. I will advise if you have the times and chances, learn as much skills as possible you may need them nit just to .and money with them but to even survive and navigate life at some point in your life.