I'm the kind of person who likes to judge things myself. I don't pay attention to reviews. That's mostly because they can often be extremely biased and unfair. I actually love A LOT of video games, movies, TV shows, music, etc, that are often poorly received by critics. Which is exactly why I consider reviews to be pointless. Again, they're often biased.
One great example in The Sims is 'Katy Perry Sweet Treats' (stuff pack from Sims 3). A lot of people criticize that pack simply because it's Katy Perry related. The same goes for the Katy Perry edition of 'Showtime'. Most reviews I've seen for that pack are negative, but hardly ever about the overall theme or content itself. Most of the negativity comes from the fact that a lot of the reviewers don't like Katy Perry. It's biased.
I've seen these kinds of things happen with quite a lot of other games, movies, etc, as well. I won't go further into detail (since this is a Sims forum). But that's the point I'm trying to make.
Anyway, without going further off topic, yes, I would buy Sims 5 if it looks appealing to me. Reviews on the game simply won't make a difference in my decision.