If its worth continuing is up to you. Those are some questions that may help:
1-Do you like making comics?: if you enjoy it, keep making them. Even if you dont publish, it is a cool hobby to have.
2-Do you see it as a hobby or as a carreer?: to make a living on comics, you need to deliver a product of good quality. It involves learning about writing, storytelling and art among other things. If you are willing to put the work on improving your craft go for it. If it is just a hobby, there is no need to improve (unless you enjoy working on the quality of your craft)
3-Are you interested in posting online?: Everyone has their reasons to share things online or to keep them private. Personally i dont share all the comics i make. When it comes to sharing content online, you are open for outside judgement, for better or worse. Personally i think Tapas is a good site to get constructive feedback if that is your goal, but it is always important to be careful on what you post.
Wish you the best on finding your answer 