I don't think this would be a good idea. Not to mention the technical impossibility. We personally cannot have "no gravity" because it's the earth that is pulling us toward it. And if we turned off the earth's gravity, then we wouldn't be flying, we would be floating. We could easily float into the sun. Or another planet. But that wouldn't matter because we would be dead by then, on account of the fact that the earth's gravity is the only thing keeping the atmosphere on earth.
Now, if someone did somehow manage to create this "personal anti-gravity devise," there would still be the problem of, you are not flying, but in fact floating. You could accidentally go to high, lose consciousness, and float away into space and die. Or, if you were to high and turned the devise off, you could fall and die. There are many things you need to think about in cases like these. For now, just enjoy airplanes.
I don't think this would be a good idea. Not to mention the technical impossibility. We personally cannot have "no gravity" because it's the earth that is pulling us toward it. And if we turned off the earth's gravity, then we wouldn't be flying, we would be floating. We could easily float into the sun. Or another planet. But that wouldn't matter because we would be dead by then, on account of the fact that the earth's gravity is the only thing keeping the atmosphere on earth.
Now, if someone did somehow manage to create this "personal anti-gravity devise," there would still be the problem of, you are not flying, but in fact floating. You could accidentally go to high, lose consciousness, and float away into space and die. Or, if you were to high and turned the devise off, you could fall and die. There are many things you need to think about in cases like these. For now, just enjoy airplanes.