Certainly, why do you think that it is not worth? If it is not valuable, why do million people in the world invest in it and use it for payment?
if you are talking about bitcoin as micro-payment, currently its not the case because of the high cost of transaction fee and slow confirmation time. But if you are looking at it as for of investment specially for long term, YES its definitely worth it because your money can grow 10 folds in just a matter of years. Last year it started at around $700 and ended at around $13,000-$15,000. So clearly you should have profited that much already by just holding on it for one year.
i believe bitcoin is still very worthy coin to invest now, bitcoin is still on the move of rising every year, and surely will keep rising in the future, so it is up to you to choose to invest or not depends on your financial.
This is what I'm saying, every year there is a big movement in price. Some predicted it around $30,000-$50,000 at the end of the year. But it's too early to tell. Of course if you have lots of funds to invest, you can get tons of money from it. But others as well invested in small proportion and overtime they can accumulate more resulting in a greater profit in the end.