I don't agree with your idea of demonising selling of Bitcoin because there will always come a point when you need to take out some money from your Bitcoin investment so that you can also enjoy the fruit of your labour. Even JJG created a thread on Bitcoin withdrawal strategy, a beautiful thread and tool created to ensure that one does not harm his portfolio while trying to take out some funds.
If you don't have a target before starting your Bitcoin investment, there is a possibility of making mistake such as selling when you think you have gotten enough or investing more than you should which will stretch your finances thereby forcing you to sell.
Using myself for example, my plan is to build a good Bitcoin portfolio now that I'm still in active service using my salary and other passive incomes so that when I retire from active service, I wouldn't have to worry about anything since money will no longer be a problem as part of my Bitcoin will be used for my needs while part will be kept for my children as inheritance. With this plan, I don't have any reason to think about selling now because my objective is a long term one.
Sure a goal can be to continue to accumulate wealth in bitcoin as best as you can, but you also might have some ideas of either timeline or even quantity of income that you would want the bitcoin to be able to replace... so for example, if you currently have an income of $40k, but you expect that in 10 years you will have an income of around $100k - partially due to promotion yet partially due to the ongoing debasement of the dollar.. then perhaps in that timeline you might have a goal that you would like to be able to have your bitcoin replace and/or supplement your income.. and maybe you have some flexibility in regards to if you will keep working, reduce your work or just to potentialy start to spend bitcoin even while you might still be working.
In contrast with odohu, I agree with you JJG to a great extent however, looking at the registration date of most of us here on this thread, including newbies visiting off and on its quite obvious that we shouldn't even be thinking of selling at any point yet as long as we have everything in place before embarking on the bitcoin investment journey or even if we don't have it all sorted out but along the line we are making it, hence i presume that we are all still in the accumulation stage. Buying should be the priority over selling even do taking profit might be considered but as for the journey I'm pretty not sure a good percent of us (newbies in bitcoin investment) have a solid portfolio to practice the sustainable withdrawal ideas JayJuanGee shared in his other threads hence only a few infact little to nobody is able to practice that because we have a little portfolio hence are meant to be fixed more on accumulation that withdrawal or profit taking.