I too had that feeling. Nevertheless at a point, you would even prefer the using the forum on your mobile phone rather than on your computer out of convivence. All you have to do is zoom in and out.
I think one of the key important benefits of accessing the forum on a desktop is the fact that, links and codes are highlighted once you place your mouse of them. This in turn reviews what is within the link and therefore, prevents phishing by clicking unknown links for those that are very observant. Other than this, the other benefits to it is superficial.
Superficial in the sense that, it’s just some of those benefits you get from using a large screened device.
It’s really an individual thing, more of where you use more for an access point and getting used to that point. For some, the desktop keyboard might be way too large for typing than the mobile device, mobile devices brings the display closer to your face while the desktop have got a more eligible font and many other differences.