Should visitors be given the right to comment on the forum? Or is membership required?

[ABgamesXO]

Should visitors be allowed to write comments, or should this permission only be granted to members? I am asking this for a reason. In our daily lives, after stumbling upon any forum following a search we made, sometimes we want to leave a comment while reading the topic, but we refrain from doing so to avoid dealing with membership procedures. Or if we must ask a question, we end up becoming a member, only to forget about it later. Instead, I am considering allowing visitors to comment and even create topics on my own forum, which is only 2 months old. What do you think? Would it be logical to permit this for more content input and interaction? Note: In 2 months, I have gained 110 members and made around 250 comments.