It matters what you consider worth it and the risk tolerance you're ready to open yourself up to. If you're a trader that's spending 40 hours a week trading and is barely able to make a few hundred dollars, or you're losing money -- then, of course, it's not even close to worth it. But if you're able to spend less time (like drastically less) and make that money then so be it.
Time is money, and you could have another job with all of the time of a full time trader.
Any trader that is even spending up to that hours in a week, which is more like day trading as normal job and still not making a lot from trading will really need some flogging for even attempting to trade in the first place, because the only kind of person such a thing can happen to is someone who does not have any idea about trading and is busy doing position gambling. They will be better off going to casinos than playing with the charts and expecting luck to guide them.