It's hard to adjust to the lack of personal space - but I guess that it's a cultural difference.
I live 'auf dem Land', and still a decent sized garden is a rarity. Perhaps because using one's garden is difficult due to neighbors. One may quitely putter about with a few plants and window boxes, but actually using one's garden as a place to for children to play, for pets to run about, or for adults to entertain is uncommon because of noise restrictions.
Here one rarely sits out and enjoys the outdoors - perhaps because it's too public. A large garden isn't really seen as an advantage to many home buyers.
Not to mention, caring for a large garden with the limited hours available when noise is allowed is difficult. Few people have the equipment (or space to store it) needed to do so. Hence most people put in concrete patios or rock gardens and hire a landscaping firm to do the maintenance.
Given that land runs in the 1500-3500 m2 range, a large garden is a huge expense - especially when one considers that one may not be allowed to use it as one wishes.
I had to laugh - when I spoke to a real estate agent about selling my house he listed among my home's highlights the 'riesigen Garten, geeignet für Hobbybauern'. Huge garden, suitable for hobby farming? It's less than a quarter acre - back home we'd call it a postage-stamp.
Took a gander at the Geneva area on homegate. There is a house listed with a plot of 22 m2 - but that has to be a mistake. Or at least I hope it is: http://www.homegate.ch/kaufen/103886...ault&l=default
There is one listed with 'un joli jardin à 60m2 - Is it possible that one excludes the footprint of the house in GE? I doubt you couldn't fit that house on 60m2: http://www.homegate.ch/kaufen/103843...ault&l=default