As a species I think we are complex by nature which urges us forward into further complexity. Gone are the days of simplicity. As we evolve and our technology evolves and our species becomes more integrated thus we become more complex.

yes. it's rare for a species to evolve to a less complex form of itself (generally speaking), there are always new life forms being discovered that are one step beyond that which we already know.

It depends how you look at it, For example thee film Water-world the main character played by Kevin Costner had Gills, Now on a biological level its a complex thing to have but it is designed for him to breath at ease underwater to make things easy for him. So in that respect its a bit of both.

Life evolves towards and favours adaptability, those species that are able to adapt to changes in their environment or able to adapt their environment to suit them, thrive and become dominant. Species that allow their environment to adapt them, must ultimately share the fate of that environment.

Life evolves toward necessity and self-propagation. In some cases this means complexity, perhaps in other cases, simplicity.

"life" evolves towards simplicity, "Humans" create complexity and in almost every instance it is to their detriment.