To simplify both posts below:
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FSA: good if you know you’re going to have $2-3k+ medical expenses and want to use tax deffered money.
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HSA: good if you want to save tax deffered money year over year (and don’t mind having a high deductible insurance plan)
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additionally, some people use HSAs as an investment for retirement.
But they’re the minority, most games have gatcha/pay-to-win mechanics. It’s actually hard to find some simple games where you aren’t harassed to buy things.