The "It's ugly" argument is possibly the worst argument I ever here from people about wind turbines.
Why? The same argument has been sent against power plants for decades. The only difference is that wind turbines are normally build at the most beautiful places (coast lines, hills) so they have a much bigger impact on the looks of the region.
Besides you have to build thousands of the bigger ones to get rid of one nuclear or gas power plant.
This wouldn't be so bad but most of the time you will need to build the old power plant AS WELL because wind only blows part of the time. (If the power grid is up to it anyway)
So yes disfiguring your landscape is bad. Its bad for the quality of life, it can be bad for birds and its bad for tourism dollars. This would be different if it was a magic bullet but wind power is currently at 1-2% of electric power and much less of general power consumption so it currently doesn't save the environment or anything. It simply doesn't have enough potential.
Alone. That being said offshore windparks of commercial size can be a great thing. They do not disturb the landscape and they seem to be getting economical. Now we only have to build enough buffer capacity to store the generated electricity and upgrade the net.