Is it worth spending time to collect Bitcoin rather than having a daily job? What I mean is that can bitcoin be more economical? Has it ever happened that people lose their investment value rather than benefit from spending it on bitcoin?
No. You keep your daily job and then collect bitcoins with money you get from your salary. Because collecting bitcoins would require you to place money or buy bitcoins from exchanges. I wouldn't recommend you to buy a miner but rather place money on them.
I think the term "collect" is not the word for this but it is earn. You earn bitcoin out of your daily job and buying and mining them is also one of the good ways to have bitcoin.
And I think earning or collecting them is worth it especially if you are earning bitcoin before it reaches interesting prices. If you do, I think you are having a great time with the pump that is happening.