Costs and benefits don't usually add up to 0. If they did, everything you do in your life would be absolutely irrelevant. The trick is to chose things with best cost+benefit value, and if it's not easy to express all costs and benefits in a single unit (because it may be hard to estimate them), then you chose so that you get costs and benefits you like the most.
Those "big advantages" also come at a steep cost - somewhere between $10-100k per year for a family compared to similar conditions available elsewhere.
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