For me at least this isn't didn't work. As just a small example I went to Europe for 3 months. Helsinki->Stockholm-Antwerp->Brussels->Berlin->Copenhagen->Tromso->Amsterdam->Koln->Dusseldorf->London. Seeing each city was great but the actual things to do start to get very similar. Each city has 2-3 churches. A bunch of art museums with many of the same artists. Yet another farmer's market or marketplace. Shopping centers with the same brands. etc..

I think it was "Happy Money" by Elizabeth Dunn that claimed their studies indicated that long vacations are not as effective as short vacations because most people get used to it quickly and the novelty wears off. That certainly fits my experience.

If her research is true then it would suggest taking a short trips every once in a while (a week or less?) would be more rewarding than a long trips.

Of course everyone is different. I'm sure some people love infinite travel.

i would never consider visiting any western (or westernized) country to be on par with truly exotic ones, especially when backpacking. maybe they just 'click' with me and all people I know that went through this and describe similar effects, you can be surely different.

but until you try that india experience I suggest, backpacking, on low budget, we're talking about completely different experiences in depth and intensity. 3 months were enough for me, went twice like that.

just one comparison - after a month, all life back home was a very distant memory. after additional month spent hiking in nepal, all my previous life seemed like a faded memory of a dream i had a month ago, unreal. or like childhood memories. not sure how to describe it better