If the SSD contents are not changed then yes it will very likely last longer.
I've never had an SSD fail due to writes even after years of service so. Others I've seen people post seemed to be controller failures. So in general I wouldn't worry about write durability for the average user since it seems rare that anyone surpasses it.
Also I find it highly unlikely you'll *want* to use the same drive in 15 years. By then you'll be able to get a much faster drive with more capacity for a fraction of the price. It's also possible that systems of the future won't support the drives of today. Planning that far into the future just isn't realistic.
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