I am pro-trim if there is damage or severe breakage. Other than that, I see no need unless the person prefers maintaining a certain length or style. For a long time I trimmed every 8 weeks because I loved the blunt cut, and I wasn't concerned about growing my hair out really long. However, that was a couple years ago. I find now that dusting once or twice every couple of months just to keep the ends neat is sufficient.
Here is my LONG 2 cents (sorry)
But I do agree in that if they KNOW what they are doing and CHOOSE to do so, that it THEIR decision and should be honored. I ain't dogging NO ONE for not trimming. Shoot, I admire that. I wish I could go for years without trimming if I didn't NEED to. More power to you indeed. But if it is see-through and still calling it healthy, that is an objective word, and healthy it really is not.
NOOOOOOOOOOOO!!! Your ends are fine!!! Don't chu cut that hair gurl!!!
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. But hey I'm known to be wrong.