I haven't ever set any target other than having more Bitcoin at the end of each month than I did the beginning of it. That's easy to achieve as I now have several sources of income paid in Bitcoin, I just need to make sure I don't spend all of it.

If you really believe that Bitcoin has a long-term future as a form of money there isn't a reason to stop. Why save inflationary fiat money when you can save deflationary money?