Quitting smoking has two big benefits, and I've been doing it for over 3 months. And both can be said to be long-term investments, apart from long-term health, the money used to buy cigarettes can also be used to invest and I invested in Bitcoin.
In one month I can spend approximately $90 to buy cigarettes, and the price of the cigarettes I buy is around $2/pack for one pack a day and sometimes more than one pack.
And by quitting smoking, I was able to increase my regular monthly Bitcoin purchases from a portion of my monthly salary as well as $90 per month in cigarette money.
Some spend a lot of money on the cigarettes and alcohol they consume every day, sometimes even in a week, month, or year. They will gain from it in one way or another if the money is calculated. These individuals have struggled to break these deeply damaging habits, so if any of them have the chance, they should use the money for something tangible, such as a bitcoin investment or anything else that will benefit them in the long run. The reason I say anything other than a bitcoin investment is that some of them may not even be aware of bitcoin, but they may use the money for other purposes, such as physical investments, which will enable them to have a bright future.
But first, I must congratulate you on being able to give up smoking and use the money you saved to invest in bitcoin. It is not an easy habit to break, especially if you have been smoking for a long time, and 90 dollars is not a small amount of money given the state of the world economy right now. If you can use this money to invest each month, as you mentioned, you should be able to accumulate a sizeable amount of bitcoin that, if you hold onto for a long time, will positively impact your financial situation.
But it is not true to everybody. Some people who give advice to quit smoking so you could save up to buy a car, a house, or something else, then you'll ask them if they smoke, they'll answer "No", and then you'll ask them "do you have a car now since you don't smoke?" Most of them will answer "No, I don't have any" which helps you realized that whether a certain person smoke or not, if he doesn't know how to handle money, he can't buy anything because he can't save any amount.
They believe that the advisor lacks experience and expertise. They are the ones who have experienced the effects of smoking. This has been happening in my presence, and they have responded to the person giving them advice with the exact response you just gave, but it is untrue. The advisor may not even have the same amount of money that they did when they used to smoke every day. If so, would he have been able to save the money he is advising them to save after giving up smoking? Though it really depends, some people spend a great deal of money on things like smoking and other things that negatively impact their lives rather than improving them.