Thats great in theory, and as a social expirement it might work somewhere like northern europe where the amount of land per capita is much higher than the rest of the world.
But if the government isnt enforcing property ownership, then how are you going to find a place to live without someone coming along and trying take it. If we could just "pick a plot of land" (that presumably someone else owns) and set up shop there, it would be chaos. It seems like it might be quite difficult to explore your options while youre fighting off mad max style marauders.
I also feel like youre overestimating the relative burden of taxes. yeah, things like rent and food are taxed. ANd perhaps taxation even quietly drives up prices beyond its simple magnitude. But at the end of the day, these are still things you must buy, unless you plan to be a subsistence farmer. Thats a pretty tough life though, and that wouldnt leave much time for the sort of exploration youre talking about either.