Remember when they "teleported" a photon?
"How do you know you teleported it?"
"Well, the one over here is the same as the one over there, int it?"
...then they admitted that they had a 'spare' photon over "here" just hanging around...
Teleporting macroscopic bits of matter would involve either:
(a) moving gigantic amounts of energy at speed-of-light or faster velocities, and not destroying your equipment;
(b) moving gigantic amounts of information at speed-of-light or faster velocities and then using a tank of "stuff" to rebuild whatever was teleported. Unless you want two (2) copies you must destroy the original (the scanning process might do that anyway), which means murdering Commander Ryker #1, which might present some wee legal complications. If you don't murder Commander Ryker #1, we have two of him, same fingerprints, same SSN, same address. #2 owns one-half of everything owned by number One, and he can prove it.
Given that converting a human body to pure energy would probably liberate enough energy to destroy the Earth, both modes sound a little unlikely.
Assuming a 150 lb person, you would yield ~1636.36 megatons. You'd get a pretty big hole and maybe clean off a couple of hundred miles in radius, but the rest of the earth would be just fine...
Of course, if ask me, just .36 MT would be too much if were anywhere, but say, Fallujah or something.
Not even close.
To destroy the Earth and create an asteroid belt you would need roughly a 60km sphere of antimatter with a density approaching nickel-iron.
A 200 lb man turned to antimatter would release about 3.89 Teratons of TNT in an equivalent explosion. By way of comparison it would be somewhere between the K-T impact event and the energy required to disrupt the planet's atmosphere. Still, it's orders of magnitude less than required to destroy the Earth.
Of course it just would kill most every living thing on the planet.
1.8E+17 J/g Antimatter
4.19E+12 J / kiloton
Reminds me of a very similar dilemma in the sci-fi short story "Think Like a Dinosaur." Basically teleportation involved completely copying someone at Point A and reassembling them at Point B. Then Point A person was killed in order to "maintain balance."