OK. I'll dive in, I'm going on vacation the rest of the week and got nothing to loose.
Lost bird said:
... prestigious institute and then be part of leading physics...
Not many of them across the planet, post-doc there is a possibility, regular appointment limited to maybe the top 50 theoreticians in the world.
Lost bird said:
...sacrificing my entire 20s and even 30s...
pretty much a given, plan on at least two post-docs and graduate school, which is taking more and more time.
Lost bird said:
...earn a decent amount of money, and by decent I mean I can afford an international holiday at least once in 2 years, support a family of 4 people including me...
What do you mean decent amount of money, international travel isn't cheap, if you plan on that, then plan on going without things between vacations, faculty salaries aren't exactly generous, if you can actually get a faculty position and tenure down the road. Try saving or paying for a house and a vacation, it isn't easy, I make 6 figures but because of where I work, where my family lives (which is not where I work) and how much I have to pay for college for one of my kids, I'm lucky if I can afford a short trip back to see my wife and kids once a month and we have taken only one vacation (not international) in the past 4 years.
Lost bird said:
... support a family of 4 people including me...
all in how you live, little ones are expensive and it doesn't get any cheaper as they get older.
Lost bird said:
...is experimental physics easier and pays better than theoretical,...
I don't think I have ever seen experimental vs theoretical salaries, so that isn't really a question that can be answered.
Lost bird said:
...I really am passionate but I want to live a full life, I should be able to go on holidays, spent time with family, buy what an above average person can afford and also follow my hobby(film making)...
you have to have hobbies, but if they interfere with your career, then you need to think about what your career is...