Why ban smokers and not fatties?

I'm back in South Africa after 5 wks in the cold springtime in Sweden. We had a braai outside at 7pm and it was not feeling cold...
The trip was nice except for the long waiting hours at CDG in Paris. The 2E terminal is really boring. You would expect to be able to get some nice food in Paris, but all they offer is industrial food packed in plastic containers or wrapfilm. Not a decent restaurant to be seen...
Most airports are now prohibiting smoking... At least Arlanda airport has a small gas chamber, but in Paris there is no place for smokers. The reason for prohibiting smoking is probably based on two facts: 1) Smoking is not healthy. 2) Smokers cause discomfort for the people around you.
I have to agree to both of these facts... even though I am a smoker.
But...
On the shuttle from the airport in Johannesburg to Nelspruit I was sitting on the leftmost seat in the back row, and then an enormously fat lady (I would guess around 140 kg) took the seat next to me. When she landed on my right thigh I squeezed towards the window on my left, so she could at least touch the seat. I had to sit very contorted for a few hundred kilometers, but that was just the beginning!
During the last 100 km down the escarpment down the Schoemanskloof road, which has a lot of sharp turns, I really learned about G-forces!!!
That lady, holding on to the book she was reading, when the shuttle was doing 120km/h, put a pressure onto me that was probably around 200kg... That must compare to 1.5G, but it could have been more...
While feeling like a sardine in a tin, trying to fit in a walrus in the same tin, I was thinking:
What's the difference? See about smoking above... Point 1 and 2...
To be that obese is also not healthy... And it can cause discomfort for the people around you... So why not ban it... At least in public places or transportation...

Back to the Warm Winter

Eish!!!
After 4+ weeks in the Swedish springtime, being cold every day, I will soon return to the nice winter in South Africa!
It's amazing how you get used to the subtropical climate in SA. I have learnt that the previous winter in Sweden was quite extreme, with severe cold and a lot of snow...
I cannot take that anymore. I haven't been in Sweden during the winter halfyear for several months, and have no clothes suitable for the winter. But when going to Sweden for a few weeks of work I thought it would be a nice springtime weather... But I have been cold every day except for perhaps 2-3 days!
But in five days I'll be on my way to the nice, beautiful South African winter!