I've searched this issue and it seems like the only way to have new tabs open with your homepage is to download the add-on. I understand it's not a big deal for me to get the add-on but it shouldn't be a big deal for Firefox to have this function on it's own without the user having to search and download the add-on. I feel like browsers should allow users to open new tabs with whatever url they choose and I can't even do it with my homepage! Could there be a reason why they refuse to have this be a functionality? This is the most annoying problem I have. Most people open new tabs to multi-task or support their current tab!