Board Thread:General Discussion/@comment-4504826-20160516034744/@comment-30047767-20160923185724

There is a lot of discussion about how much determination and ability they had. Regardless of those however, I think that the main reason is that they simply didn't know that they can do that!

Flowey was clearly surprized and amazed by his ability to LOAD (apparently he auto-SAVEd in the garden). It never occured to him that he can do that before his first suicide attempt - which was a genuine attempt, up to the point when he felt apprehensive.