This.
I love all 3 original games (to a ridiculous amount in fact) but I do not at all understand why so many people claim that not only is 2 the best of the trilogy but that it had the best story.
I think 2 is by far the weakest story. The main plot makes little sense and in the end contributed nothing to the lore of the series (anyone remember why the Reapers were secretly harvesting Humans to pre-make a human Reaper before the real invasion?!). The internal story beats are great, I love the Illusive Man and the loyalty missions are awesome (
despite being the biggest offense to the trope of wasting time on ridiculous side missions while the whole galaxy needs saving), but the main plot was flawed and the Terminator Reaper was dumb as hell and still makes no sense. Weakest point in the series IMO.
ME 1 had the best story IMO and 3 was the best all round package. Despite the stupid endings (synthesis and control) you can pick if you are indoctrinated (
IT for life!), the story is great and wraps up all the best story arcs of the series in brilliant and meaningful ways. Also best combat (up until Andromeda at least).