Why do air signs die young or wrongfully?

Because they are smart. 💙

They go to heaven as heaven is a better place.

I find this to be more true of water signs. Depression and suicide plague us.

What does astrology, a load of bohunky, have to do with death to begin with.

You shouldn't connect this to just sun signs. There could be other factors in the person's chart that could signify death at a young age or being murdered. 

There is no statistical connection between the Sign your Sun is in (your month-day of birth is only your Sun sign), and how or when you die.

The 8th House indicates the manner of your death, and the 4th House indicates the conditions towards the end of your life.

Houses are found using the day-month-year of birth, the EXACT time of birth down to the very minute, and the longitude & lattitude of where your were born.

Sun signs are only 2% of your total natal chart, but they are the only on of 40 to 50 factors that can be found without specific birthdata. This makes them an excellent commercial gimmick .. selling your writing to a public that is ignorant about real astrology.

They accomplish more so their time is due.

That's two. Air signs aren't more likely to die young than anyone else.  However if you are of a macabre turn of mind, there are some indications in a chart (but no one size fits all signification).  If the Sun and Moon are not in aspect (by sign is good enough), it is an indication of a premature death.  So is Sun in the 8th, ruler of the 8th in the first especially if it is tightly conjunct the ASC, both lights afflicted by malefics,  planets in the 4th heading to the 4th cusp by direct motion, or planets in the 3rd heading to the 4th by secondary progression.  It helps is one of those planets is hyleg.  Look it up.  There are others. 

Those are all red flags and no guarantee of an early death.  Hugh Hefner had Sun in the 8th and he lived into his 90s.   If any are present in the chart, look for mitigation by the benefics.  If there is none - be careful. EDIT:  @Anon, just two? You think I should add more? JFK murdered. Abraham Lincoln murdered. Biggie Smalls murdered. Marilyn Monroe suicide, but depressed as the industry treated her like garbage. James Dean. Sandra Bland. That's six.  You don't understand arithmetic, I get that, so listen up.  Six people with air signs that died young and you think that makes a case?.  How many people with air signs are there?  How many hundreds of millions since Lincoln was born? How many other people born with the Sun in an air sign did not die young?  How many people who were not born with the Sun in air signs did die young?   Now compare that to your six. Get it yet?  Use your head!!  But you went to public school and all you ever learned is that you cannot be wrong about anything, no matter how idiotic you sound. I get that, too.  It might not even be your fault.