War:
Pro: Highest personal DPS. Highest overall mitigation. Sacrifices the least to maintain agro in DPS mode.
Con: No ability to help someone else besides slashing which is usually covered anyway.
Result: Its the Sam of tanking. It doesn't help anyone, it just does its core function better than anyone else. The selfish version of its role.

Most people seem to think the lack of raid support makes it inferior. But the truth is that, even in savage, it is not very important outside of world 1st groups that are way lower ilvl.
Alternatively anyone left seems to think the self mitigation/DPS war gains is the end all be all. But the truth is that 100-200 dps when groups are doing well over 20k makes virtually no tangible difference either.

You wont miss the utility. You wont feel the damage/mitigation advantage. Its a tank. It does the job its designed to do. If you aren't a world 1st group then all tanks are viable, and bring a slightly different set of tools, but still get the job done. Is raid mitigation you don't need more important than self mitigation/DPS you don't need? People act like there is some dramatic world shattering problem or issue. There isn't. Play what you like. Play what you are good at. A good tank that enjoys their work is better than a being a 'meta' tank. The meta is world 1st. The scrubs on this forum and reddit just parrot what the pros do and think it matters. Most of granular differences that affect what they do doesn't apply to us. This applies to every game. The META means nothing if you aren't at the top pushing the limits of what's possible. Its just a pile of internet guys quibbling over 1-2% differences and pretending it defines their play in bronze league.