[titanix2]

> I should be used to accents and maybe biased towards the idea of having them as part of a language, but on the contrary, I love that English has none

This is popular misconception shared by a lot of French but actually English has accent and a few other diacritics as well. You can see them in loanwords such as canapé or saké, and on word like coördination.

[boznz]

You may be right but I was Born and went to school in the UK and I don't remember any accents. The first two words are just French and Japanese words we use but the accents are generally left out of English spellings of them without any noticeable difference, the other I've always spelled as "co-ordination" with a dash.. of course if you went to a posh school it is likely done properly.

[kevinios]

True, but I suspect they are sufficiently rare not to constitute an argument for a beginner not to learn English (also, correct me if I'm wrong but most of those words have accents because they come from other languages)

[gcthomas]

English had native accents, as in naïve, to show that the double vowel was pronounced as two sounds, but they have declined in use over the year. Cooperate isn't spelt with 'oö', which makes pronouncing it from the spelling difficult. But English has never really been spelt phonetically anyway, so it is now overdue for a reformation really.