There is a whole world beyond Word
Plain text rules!
If you wrote your first poems in the late 80s with a simple texteditor, you are lucky. Take the file, fire up any decent text editor, load the file and be ashamed of ever having written such stuff. Maybe you’ll encounter some encoding problems, when you did not use ASCII-encoding, some special characters might look strange. But this is fixed in minutes with ›find‹ and ›replace‹. It is really simple. Plain text files are still readable. For any other file in a special format, you need either the original program or converters. So if you want posterity to read your files – stick to plain text.