I dislike this movie the most out of the X-Men films, but I like how many of my favorite actors are in one movie together in a high-budget crossover. I hate time-travel though and I hate Bryan Singer.
The first season is great, but after that the show loses its quality. Seasons 2 to 4 do have some good moments, but all in all it feels like they kept it going just to make more money. I can highly recommend the first season, which you could watch as a standalone, but the other seasons were dissapointing overall.