The advantages are vast bitcoin is fast becoming mainstream and more widely available.
I would point out that the disadvantage I feel is people jumping in at the wrong time. I have seen people jump into bitcoin and make mega bucks and the other extreme of the table lose it all and end up with nothing.
Always keep this in mind.
Quitting while your ahead... Is not the same as quitting..
I agree. However, right now, I can tell you that it has more disadvantages than advantages, therefore, if you really are serious with investing, then I urge you to keep at it and continue. However, if you are just doing it without any clear purpose and you just feel like you're being drawn to it because of the many comments and things people has to say about it, then I suggest you think things through because the cryptocurrency market is not an easy one to be one. For one, the return may take time since the increases come and go. Also, the market is usually at a constant stand still, thus, it's very hard which venture would be best to try, especially if you're a beginner. Also, you really have to invest a lot of time and patience, to some that in itself is hard to do.