I quite liked watching this light novel. I find the story very well-developed. As a person who lives a socially isolated life myself, I understand the MC and his thinking style from experience, and I can confirm the (healthy) effects that socializing and friendship have on people, just like it does to myself. The comedy style is pretty smooth, I had a laughter on several occasions while watching it. I think the romantic part is also very interesting and describes fairly accurately how first relationships tend to develop in an introverted teen's life, specially a grumpy one.

[spoiler]The last season ended in a way that I didn't like much, since it left the love triangle open, but I suppose this is aligned with the "SNAFU" part of the anime's name. After all, Hikigaya didn't seem much interested in typical romance stuff, but rather in being around the two girls, Horikita and Yuigahama, as one can tell from his reaction to Horikita's love declaration in the last episode. I thought there would be a season 4 to show the development of Hikigaya's last school year, but it seems the novel has ended at this, which is another thing I didn't like much. All that said, it was a superb anime to me.[/spoiler]