Well I totally agree that imposing restrictions is not the solution. I don't believe in these type of bans. But yes, if we are a bit mature i believe we ourselves will not engage in kissing in public.
We have our freedom, but it does not mean embarassing others in public places, in front of families, children and elders.
Personally I love my privacy and I would rather like not to be watched by anybody.
And yes the Government should stop interfering in this matters of least importance and let the public decide, meanwhile they should concentrate on real issues.