It is definitely worth it. At the moment, it is CPU mining only so it is perfect. Safex developers specifically had home computers in mind when they decided to use the cryptonight algorithm.
If you're interested in using the platform when it is operational, safex token is required. So grab some while its cheap ($0.04) from Safex.io/. You can pay for it with BTC and it is able to be bought in lumps of 5000 Safex coin. Set up your safex wallet first to have the address ready to be sent to.
Having Safex coin will enable you to buy an account when the platform is live at Christmas. The amount required to burn to set up your Safex account is extremely small (1 or 2 tokens) which equates to about 8 or 9 cents at current value.
The plus side of having safex tokens is that they are your stake in Safex and will earn you that passive income.
If you have any more questions, please don't hesitate to ask!
Nick.