Are Umbrella actually "the bad guys?"

I've really only played the mainline games.

In every instance I can think of, Umbrella was sabotaged (Wesker, Birkin, Nikolai, etc.) ...and they always made efforts to clean up their mess after things hit the fan.

I totally get that creating bioweapons is not a noble cause... but Wesker (and whatever organization he and Nikolai work for) are the real bad guys, right? ...or am I missing something/some lore from of the side-entries?