I gave up 4 years ago after smoking for 31 years, the last ten of those years saw me smoking 40 100mm's a day.
I always thought that I paid way too much in duty, but realise that to keep someone in hospital on ventilators for a few weeks cost a huge amount more.
I decided I wanted to give up for my health and wealth, found it very hard to do and only succeeded with patches, lozenges and a great deal of support and understanding from my family.
Still find that I fancy a smoke at times, especially after a meal or drink with friends, but happy not to do it.
On the plus side, I don't wheeze when climbing the stairs, or cough so much.