Not the GP, but I feel the same. The reason is that my views haven't really changed, yet somehow my political positioning went from quite liberal to something most people, below a certain age, would consider conservative. I value: free speech, equality of opportunity, antiwar, anti political correctness, anti megacorp, and view the liberty of the individual mattering vastly more than than dictates of authority/hierarchy.
More generally, I think politics has shifted such that left/right is no longer meaningful, as people tend to be much more split on libertarian/authoritarian world views - particularly on the degree to which accredited individuals ought be able to impose their views on society in an effort to 'tweak' people's behaviors. That nuance, more or less, immediately leads to the shifting winds on the issues I mentioned.
More generally, I think politics has shifted such that left/right is no longer meaningful, as people tend to be much more split on libertarian/authoritarian world views - particularly on the degree to which accredited individuals ought be able to impose their views on society in an effort to 'tweak' people's behaviors. That nuance, more or less, immediately leads to the shifting winds on the issues I mentioned.