Jayand
As the Coalition Forces in Afghanistan include Sweden - a Country which was neutral during both World Wars - it would seem that your viewpoint is not universally shared.
Pakistan would fall completely into Civil War - which would doubtless engulf the whole Sub Continent as India has a sizeable Muslim population. Iran would subjugate the UAE, Iraq, Oman and Saudi Arabia for their oil assets. There is already considerable concern in respect of Iran's Nuclear Programme, and both India and Pakistan are alleged to hold stocks of viable nuclear weapons.
The Taliban fund their activities through the opium trade and they would increase the supply of drugs substantially if Coalition Forces withdrew their Forces.
When you volunteer for Service in HM's Armed Forces you accept that your life is no longer completely your own. There are times when you have to deploy at short notice and accept conditions which do not conform to the requirements of the Health and Safety at Work legislation.
If you are not willing any longer to accept those conditions then PVR - and let someone who is willing to fulfil their obligations take your place.