what do you guys think does it worth to start mining now ?
Yes!, it's always worth to start bitcoin mining, as long as you have the right resources. And what are the right resources?
1) Enough capital
2) A stable power supply. I think this is the most important of them all.
3) The right hardware and technical expertise to handle them.
If you don't have any of these mentioned above, or have two out of the three......then do not engage in bitcoin mining for its most likely that you'll regret it .