Not up to me or as to what I might want. If people want to go naked, that is their right as far as I'm concerned. Quite simple, because I have no issues with such - not associating sexuality with nakedness, for example. Perhaps that is just a part of 'growing up'.
The issues I can see as to religious attire, and as to why so many countries seem to enact laws as to such - the security aspect (hiding the face, for example, or the possible concealment of weapons), the 'in your face' attitude of thrusting a religious belief upon others (obviously being recognised as having some particular religious belief) and which might tend to cause friction, and lastly, as to possibly displaying their subjugated nature (forced to wear such by whoever or whatever), given it is not obvious as to such. So, more about challenging the freedoms within a country by possibly imposing dress codes, or seemingly doing so. Given that many countries where such dress codes are mandatory are certainly not equivalently free as the countries you mention.