I don't think it's a question of being against it rather than how it effects other people and that is my concern. We should all have a right to work, relax, drink and enjoy good music etc etc in a smoke free enviroment. The problem, taking away health issues, is that once a "room" is polluted with fag smoke or it's blowing into your face you can't get away from it. It stinks and goes home with you.
A smoker (26% of adult population) in a non-smoking venue has the option of going outside for a fag whereas a non-smoker (74% of adult populatuion) in a smoking venue is stuffed.
Separate areas don't work (usually because of one or two people who don't respect it) and would be more difficult to "police" than a total ban. At least when implimented it will be black and white with no grey areas (in theory anyway!!).
Like most non-smokers I have no problem with poeple who smoke only when their habit, or the residue of it, is inflicted on me.
Last point is that the ban is working very well in Scotland and Ireland so why should it not work in Wales (from April) and England.
Regards
Daz