I don't want to say that I regret it as MW is still fun and brings back memories, but there's just way too many quality games out right now. I'd be fine with just BF1 personally. I haven't even put in any time to GoW4, haven't played Titanfall 2 and Overwatch was fun and made me want to invest time into it.
At this point, I don't think that I could run MW for long periods of time. I'd be fine running for an hour and then switching it up.
Playing on Backlot, Overgrown, Crash, District, Downpour and all of the OG MW maps was great though