I can understand why you would feel upset about all of this. When you work on something hard for a long time and find out that people don't like it, it feels like all of your hard work was all for nothing. Hearing criticism can be hard, that's true. I had this problem so much when I was a kid, because I drew a lot and used to feel hurt by other people's criticisms of my work.
However, I quickly learnt that if I didn't listen to others advice, I wouldn't grow up as an artist. It was hard hearing this sort of stuff at first, but once I started to listen to people, I improved very quickly. I'm very happy with where I am at as an artist now, and it's mostly thanks to criticism.
The same thing applies to ACNL landscaping. If you don't accept other's criticism, you are only going to frustrate everybody around you, because you're so hellbent on not visiting other people's dream towns and you don't take people's advice to actually improve. We really want to help you improve, but if you're going to respond to people like this, then there really is no point in making this thread in the first place.
Could you be more specific about why you don't like most people's dream towns? You say that these people don't know how to decorate, but that is far too vague. Do you dislike the themes of most people's dream towns? Or do you dislike how they decorate with trees/PWPs/bushes/flowers/etc.? Or is it the houses or villagers?
A lot of people (myself included) look to other people's dream towns for inspiration, which says to me that these people know how to landscape a town properly.