Personally I've leveled both Artifice and Synth up to the 350 range...both have ups and downs so let me educate you about crafting.
Crafting is not and never has been "fun", its a chore that you do to get better at that has a payout at the end.
Artifice I will admit was quite handy leveling up with my Consular, however just like with Synth you run out of money fast but at least I could make good enhancements.
In all honesty, I eventually just got to a point at which I sold my Rare mats because it was more profitable because most people get mods from commendations and what not and since you can't "Twink" a low level to be good in PvP you usually wont sell the low level rare/epic mods anyways.
Synthweaving on the other hand though incredibly annoying to level as you level is thrice as profitable, procs allow your gear to be better than the average joes even with mods because you get augments as well. Another thing to take into account is that most players are all about vanity and nobody wants to wear ugly crap and synthweaving has some nice items that also look good.
In closing if you want to cry about it and don't want to put much effort into it so it pays out then go Biochem...it makes the game easy mode with infinite uber med packs, buff stims, and the resources are ridiculously easy to farm....besides less synthweavers = More money for my items that are in high demand and short supply.