No. It suggest you have little discipline, and that any conversation will eventually deteriorate into boring one line sentences that have no connection.

No, we can't learn many kinds of languages without grammar. I think learn grammar is very interesting. because of it we can speak and listen many kinds of languages around the world.

I think all in all you are right. But it depends on the reason why you are learning a language. If you need the language for professional reasons, you have to learn it systemtically. If you learn the language just for fun and if you just want to have conversation with people from other countries (as I do), than learning by doing is a great method. :-) Bernd (amigo)