Any good reasons to use transistor phono stage and line level preamp instead of tube ?

To me live music sounds warm, no high order harmonics there to give your ears that unidentified edgy sound. Supposedly tubes convey the music with less high order harmonics. So there's that.
For some it may be a bit of a pain to search out and implement the right tubes, mixing and matching to find the right combo. For me it's like cooking up some gumbo. When the ingredients are spot on just can't stop eating. Last night I ate for about 3 1/2 hours. Delicious.

Laissez les bons temps rouler
gumbo good! 
Transistor good
Tube good 
listening to derek and the dominos on wax, great! 

To my ear, tubes done right sound closer to what it should be, so ideally I would have a tube power amp as well.
I am also a tape guy and some noise from tubes is like some noise from tape, it doesn't bother me, but sure the tubes and the amps must be first rate. Hunting for right NOS tubes may not be much fun but they last long in phono stages and preamps, and you don't need many of them.

There is no such thing as a "tube" sound or a "transistor" sound! Contrary to what the untutored believe!

This statement is false although it should not be...
Transistors make more higher ordered harmonics than tubes do, that that is why there is a tube/transistor debate. If there was not 'sound' there would be no debate.

Tube phono stages are going to more susceptible to RFI if you are near a radio tower.

@sbank
This statement is false. Tubes are no more susceptible to RFI, if anything they are less so (because they don't have diodes integral to their construction that can rectify RF). Its really a design thing, whether or not the designer paid attention to RFI issues. So do, some don't.