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Why not? Before I got a smart phone, I used to be annoyed when I had to wait for a train, a bus, at the doctor's office, for a friend to arrive, etc.
Now I always have some entertainment available without having to carry books or laptop with me. There are tons of websites on the internet that can provide spontaneous entertainment, like imageboards, link aggregation sites, etc. Or I can read the news...
My quality of life did improve a bit.