Bitcoin is not a speculative investment if you spend thousands of hours studying it before making a rational investment decision. People who don’t put their time in often think bitcoin is speculative.
Check out the HBO docu: https://primal.net/e/note1puxlxa2d9y20x8dj57nc3uc8mxv0ksprhwdc5d458n4jv85yjmuqdhj3lx