I certainly don't "hate" Voyager. I'm a Star Trek fan, and there's honestly no single element of the franchise that falls below the "like" line for me. I'm in the middle of a "re-watch/first watch" right now (I probably only saw 25% of the show first run, as it didn't appeal to me almost right out of the gate), and I find it far more enjoyable now than I did back in the 90's. While I count it as far-and-away my least-favorite Star Trek series...I still like it and think it is entertaining and fun.
That said, I think there are a number of things to say about VOY that are worthy of consideration in terms of the fan perspective on it.
First, I think that VOY didn't play particularly well at that time in franchise history. From my perspective, watching it now 20 years removed from it's run date, it is a worthy and entertaining element of this big franchise. But, back at the time it was airing, it was definitely considered "more of the same" with regard to the TOS and TNG formula...and "replicative fading" was thought to have set in, meaning that it felt like it was not only "more of the same," but it was of a lower quality in terms of characters and storytelling. I think that hurt it at that time in franchise history.
Second, it ran concurrent with DS9 for several years...and DS9 was not "more of the same." So, this made VOY's repetitiveness of format stand out even more boldly and made it feel even more inferior to what had come before.
Third, they did not do a very good job with establishing the same iconic characters that had been established previously. While the characters were all "fine" and "likable..." there was really nobody who was as iconic or appealing as some of what had come before. Again, at that time, it all felt a little redundant.
Fourth, the episodic storytelling at that time was getting a little dated. DS9 had adapted a semi-serialized approach to telling Star Trek stories, and VOY felt like a big step back in terms of maturity of storytelling. To make matters worse, what VOY did attempt to pass off as arcs were more soap-opera inspired than they were anything approaching engaging long-term stories. Most of the episodes therefore either felt very small and self-contained with too-rapid a wrap-up (like The Orville currently feels), or they were epic, huge deals that were forced to be "reset" or "forgotten" as a result of simply not having the format to do a more expansive and lasting exploration of a really good story idea. The show leaned more toward "safe" than was in style or desired at that time.
I think all of this, combined with the over-reliance on holodeck stories, reset buttons, and anomaly of the week stories made the series a lot weaker than its stated premise would have initially led you to believe.
But again, this is still a good show. It has some brilliant moments and I've enjoyed getting into it again (for the first time really). It just happens to be my least-favorite (notice I didn't say "worst") show in the franchise.