I think your experience is like most of what we all go through It is an individual journey that is made better by sharing it with others who have gone through the same thing.
And yes ...... there will be a day when you CAN live without the support this board gives to you. Many leave this board and others stay. Either way is fine but be sure to stay long enough to cement your own quit. As you do this, you will be helping others following in your footsteps, even tough you may not realize it. This is why people here with many years quit yet still remain. If we can say one thing that helps another person to quit or maintain their quit, it is well worth the effort and it helps us to remember the struggle we went through to get to the point we are at as well. Complacency, once the real struggle is over, has been the ruin of many a long term quit.