Yes investing in Bitcoin is good idea because it can earn money without needing too much attention. Regular jobs that require sitting at computer all day but cryptocurrency investments can make money without watching all time. But thing is that it needs some experience some knowledge there are many ways to invest like DCA trading mining and diversification which can lead to big returns but you must have knowledge about and without learning you can lose your money.
But what do you think is more important in your life, a full-time job or investing in bitcoin? If you don't have a job or any source of income, how can you have money to invest in bitcoin because it's not free? How can you hold bitcoin until it makes a profit if you don't have a job and an outside source of income? So don't compare bitcoin with a full-time job, as Findingnemo said above, don't compare oranges with apples because that's a meaningless comparison .
No matter how difficult a full-time job is , we will still need it and it is an important part of our lives. If someone has no job or no source of income, I also believe that they will not be able to invest in bitcoin or will never invest successfully if they only borrow to invest and do not work .