Yes it is worth it to buy now. Because price now become lower compared to the last few weeks so if you bought bitcoin in the last few weeks and you still have extra money you can invest more to bitcoin to grow your money in the future or someday.
Well it all depends on what you want to invest in and for how long. In addition, if you are looking for stability, this might not be the time for you to invest but if you are looking for future profit and a big margin, do invest now.