Archaicisms

[Tiger the Lion]

Hello, I have a question.  I’m not trying to start an argument, this is an honest question that I have always wanted to ask.  

What is so bad about sounding archaic, or using archaic words, etc?  Why is it considered to be a detriment to the writing?  More often than not, the thing being called archaic is a part of the writing that I found to be charming and delightful.  Is this not the case for other readers?  Is it truly ‘bad’ to be archaic, or is it only that there are those who enjoy it and those who don’t? 

 Sincerely,
Confused and curious

I would suggest that the instances you found charming and delightful were likely well executed and deliberate. Where archaisms have no purpose other than to "sound" poetic is where they stand out as scars on a piece, As with most devices, they work best when used with purpose.