Emotions often corrupt the logic and objectivity of our thoughts. Would we be better living beings if we didn't feel emotions?

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No.

Emotions give us the “why” behind our struggle. The reason we have them is due to the limbic system, here’s an illustration from Wikipedia:

You can see the cerebellum underneath and the cerebrum surrounding the cingulate gyrus, that big green area. The cerebellum handles a lot of unconscious functioning that needs to happen both immediately and reliably. The cerebrum is the exact opposite. It handles things that can wait. The cerebellum is involved in things like pleasure and pain processing. These things are important enough to not be left to chance. Thinking, mulling over, wondering, these things happen in the cerebrum. Everything we think of as ‘higher processing’.

That green area is highly involved in deriving motivation. Thoughts bounce around the different lobes of the cerebrum, once they’ve arrived at a resolution to whatever they’re thinking about, activity in that section goes quiet. It would stay quiet if the cingulate gyrus wasn’t there to keep driving activity.

All those other smaller parts of the brain play specialized roles. It’s not that any one of these parts of the brain are “the sadness part,” that’s not how it works. Instead, it’s a generalized pattern of a response across all of these various centrally-located parts of the brain that filter out into the cerebrum as something we call ‘feeling’, which motivates through the cingulate gyrus the thoughts.

It’s important to note that this basic brain structure is shared by all mammals. Humans added only two very specialized brain structures that facilitate verbal communication. Communication is something all animals do, mammals can rely on shared brain structure to communicate emotionally. Humans have two areas within the auditory cortex that facilitate verbal thought and communication.

So consider that, rather than emotion vs logic, the real physically-derived distinction is between emotional and verbal, with emotional harnessing much, much, much more of the brain. Language allows us to twist ourselves up into knots that we need emotions to get us through. Any time the concepts we’ve created and identify with fail to produce what we want or need, emotional ‘fallback’ is instrumental.

But really, who wants separation anyway? Why not just engage all the brain, all the time, who wants large parts of their brain shut off all the time? Limbic experiencing is good enough for wolves, bears, tigers, sheep, our primate ancestors, and everybody else in the world, why isn’t it good enough for you?