7/10. That's a pretty solid score. If I'm rating something a 7, then I at least consider it to be "good".

So why is it hard for me to recommend this manga to most people?

TL;DR - I think this manga is good, but I don't recommend this series to someone who is new to the series, as I think it's the worst way to experience it. Please watch the anime and light novel instead if you haven't.

Edit: Fair warning, I'm going to be comparing the other versions of Monogatari a few times

Bakemonogatari is a manga based off of the Monogatari light novel series, taking the name of the first part. It's a rather popular series known for its characterization and witty dialogue with frequent use of wordplay and references in its writing. This can be seen in the name itself, a combination of bakemono(monster) and monogatari(story) to create the completed "bakemonogatari".

When it comes to the writing itself, it's a rather solid manga in my opinion. The story, very basically, revolves around Koyomi Araragi, a high school student who encounters numerous supernatural phenomena called "oddities" and helps out various girls struggling with their own oddity issues. The supernatural phenomena are generally connected to some part of the characters' psychology in some way, and solving these incidents require many vastly different methods. I thoroughly enjoyed Bakemonogatari's dialogue and wit, and personally found it very entertaining. Characterization is also a fantastic point for this series, with each arc introducing a new unique member of the cast that the main character can compliment pretty well in all their interactions. However, the story is by no means even close to being finished (judging by source material), and there are still plenty of developments left to go over in this manga. With that in mind, the story is really interesting and good for one that's only in its beginning stage. The presentation is pretty good as well, and while I prefer both the anime and LN designs of the characters, I can't deny that this manga still manages to look great.

That being said, I can't in good faith recommend this manga for a two major reasons. First of all, I don't expect this series, whether it be anime, manga, or light novel, to appeal to everyone. This series is 90% about the dialogue, and I'm barely exaggerating with that figure. If you don't enjoy long winded conversations seemingly about nothing and plenty of banter, this series is definitely not for you. If you have a strong distaste for fanservice, you should probably keep away as well - while it's not the absolute worst, if you REALLY hate fanservice you will not find yourself enjoying a good amount of frames. The nonlinear storytelling may also be kind of off-putting; one arc tells the events preceding the events that happened in the previous 4 arcs.

Suppose you make it past all the hurdles that this series has across all mediums. Now you've reached the second obstacle - you're choosing an inferior way to experience this series. Whether it be anime or light novel, both have at least finished Final Season, which concludes Araragi's overarching story and ends at a good place. This manga, on the other hand, is still in its introductory phases and won't be out of it for a while. This is also disregarding the most important aspect - Bakemonogatari is NOT a faithful adaptation of the series. There's many creative liberties being taken here, such as, notably, completely rewriting Araragi's character to be more in line of a "cool" shounen protagonist (personally I think he works way better the way he did originally). With this in mind, there's no way I'd even consider recommending what I, as a huge Monogatari fan, consider the worst way to experience this series hands down to a newcomer.

When it comes down to it, I like Bakemonogatari. However, that's only through the lens of someone already a Monogatari fan. For me, the only appeal is seeing an alternate retelling of the story I already enjoy, which many other fans don't even enjoy for its botched adaptation compared to the anime and light novel that we thoroughly liked. I only recommend this to people who liked the Light Novel or Anime, and just want to experience a different version.