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[sigh]
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a)
I like an opinion to be prefaced with "I think...", as in "I think greasy food is often unpleasant", and I would be comfortable with closing that opinion with "... for me."
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b)
Fats and oils are essential.
This is a medical fact.
No need to qualify it with "I think fats and oils are essential... for me.".
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An aside:
I prefer a slurpy slidey excess of long-burning fuels such as olive oil, avocado, sprouted nuts and seeds, and BACON.
Fry some sausages, roast a ham or fowl, and a nice sauce or gravy from greasy fond and drippings is essential... for me.
(Forget that preface 'I prefer'.
'I live for...' is accurate.
'I would be mucho grumpier without...' is also accurate.)
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I eliminated quick-burning carbohydrates because they are... often unpleasant... to me.
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And I think a salad is best in the blender.