Is 1080p upscaled to 4k good enough ?

I have a 4k, TV Xbox one X and I just let it upscale my movies which are most 1080p blu rays. My girlfriend insists I buy all my movies over again in 4k. I told her I'm not going to go and spend thousands of dollars to replace 400 to 500 movies. I told her if she was so concerned she could go out and spend... show more I have a 4k, TV Xbox one X and I just let it upscale my movies which are most 1080p blu rays. My girlfriend insists I buy all my movies over again in 4k. I told her I'm not going to go and spend thousands of dollars to replace 400 to 500 movies. I told her if she was so concerned she could go out and spend the money and buy all the movies over.
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