Proper nouns represent unique entities in the world around us - Why are there proper nouns with more than 25 or even 40 characters?

Human beings developed language to communicate with each other. But communication makes only sense when everyone understands all words and is able to memorize them reasonable well. We also like to save time when communicating, so people invented acronyms like LOL or DINKY. Therefore it really seems very odd to me that some proper nouns are exceptionally long. I mean long to the point of being absurd. I wonder why they were invented that way and survived that long.

I’d like to start a thoughtful discussion and am looking for a thoughtful exploration of this topic.

Here are a few examples of proper nouns:

1) Chargoggagoggmanchauggagoggchaubunagungamaugg is a lake in Massachusetts (native American origin, on a side note: even Massachusetts seems a bit cruel, especially when younger kids have to learn the spelling)

2) Pneumonoultramicroscopicsilicovolcanoconiosis is supposedly a medical term which means ‘a lung disease caused by the inhalation of very fine silica dust causing inflammation in the lungs.’

3) Zaumatawhakatangihangakoauauotamateaturipukakapikimaungahoronukupokaiwhenuakitanatahu is the Maori name for a hill in New Zealand

There are also examples of other words which are not proper nouns, ridiculously long like ‘antidisestablishmentarianism’ which is a movement opposing disestablishment.

Why did these words survive? Why weren’t they replaced with something a lot easier? Let’s face it, we even use acronmys like US, because United States seems too long.

What is your opinion on the subject? Do you know any very long words that have struck you as rather odd?