A few friends and I like your home better than ours. It's much nicer and safer than where we currently live, so we move into a few open bedrooms.
Now that we outnumber you and your family, we vote to change things in the common areas more to our liking. Some changes are small and happen over time, others more jarring and immediate. You like some of these changes in some cases, but sometimes quite the opposite.
Is it a foregone conclusion that this situation is for the greater good? If so, should your family be pressured or forced to accept?
Who has the power to make that determination?
After all, you were only there first so what gives you the right to prevent others from moving in?
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Personally, I can see the argument for both sides.