So the "you don't inhale it" part of that has absolutely nothing to do with the properties of the pipe/cigar. You can easily inhale on both and you can also choose not to inhale with a cigarette.
You can with a cigarette but it won't be any fun. Pipe enthusiasts will pay premium to smoke different blends of tobacco. It's all about the taste, the quality of the smoke and the ability to sit in a rocking chair and relax.
The best comparaison would be downing a shot of jager bomb vs. a nice glass of single malt whiskey that you will sip for an hour.
No need. Nicotine is absorbed by the soft tissues of the mouth. Inhaling prevents you from "correctly" smoking a pipe.
Take a look at this (formatting mine):
"The Breath Smoking Technique
It requires a relaxed setting, preferably sedentary and a very slow and calm breathing pattern.
The pipe bit is held to the lips continuously and all breathing is through the nose.
Every 2nd or 3rd slow breath through the nose, a tiny puff is taken through the stem, held in the mouth and slowly, very slowly, discharged back through the stem, raising but the faintest wisp of smoke from the top of the tobacco bowl, and then re-drawn back through the stem.
One does NOT inhale the smoke, but if one gets very good at it, one does not even have to puff: the slight vacuum created in the mouth by nose breathing will draw the finest of puffs through the stem.
The blowing back through the stem is alternated with regular, but very slight puffs so that the whole process of smoking seems as natural, regular and effortless as breathing.
I'm sure many smokers have discovered this technique, or variations of it, on their own.
The advantages are that mastering it will produce the coolest and most flavorful smoke possible, and the slow regular breathing will invoke the calmness and clarity of mind to perceive the results at their fullest."
I have never used one (but I was always curious when I smoked) so maybe it's a silly question.