The problem isn't whether the bow will be a good one or if you will like it. Most bows are good and most can be shot well under the right circumstances. The trouble comes when you buy something that doesn't fit properly, isn't tuned or needs some attention to the strings or some other adjustment. Beginners simply do not have the experience to handle these situations.

You need a shop that can guide your decisions, make sure the bow is setup exactly right, match some arrows to shoot properly, help you tune your new setup, give some basic instruction on how to keep it tuned, and maybe some shooting instructions.

Whether you enjoy archery or not, will largely depend on your ability to hit what you're aiming at. A good shop can get you doing this radically faster than you can on your own. Most quit because they didn't get expert advise and guidance. Online bows and ebay bows are for experienced archers, not beginners. If you need to save money, buy used or a low-end model.

If you decide to ignore all the advise that says to buy at a bow shop, at least take the bow to a good shop and pay to have it set up properly and get the proper arrows for it. Arrows are far too important to success, for a beginner to buy them online and tune them without expert help.