I like humour based on reality. I guess most of the stuff I do (in real life) isn't jokes but comedy out of the situation. Something I like to do in my own comic as well though it obviously is a difference if you do one joke every fiew pages in a long-story-comic (is it called that way?) or in a comic dependent on that in a space of a two-fremer. ^^
The more philosophical one you do I prefer more, but that is ... well ... about preference and that differs, I guess? (Like in the last one, which is supposed to be more funny I guess but I think or feel more like some kind of philosophical poem ... like a hyaku without being a hyaku at all if that makes sense, lol.)
From a style point of view I liked "Life: The Tutorial" the most, though I figure you still are trying out.
Just keep it on, even if reader counts are not that high. Only try to improve with every new page. It isn't always easy. Sometimes it can be annoying how one page turned out perfect and the next one has issues ... of which maybe only you see them...
Mhh nothing more to say other than: Good luck and all!