I eventually stopped taking this stuff because it makes my passion for music disappear. It did help with my anxiety while I was on it, but not a drug that I would want to be on for an extended period.
emotional blunting is relatively common (at least in my experience)
However, if you ever do go back on it, try sticking to the lowest active dose. it may help to reduce such side effects like that.
Other possibilities are to try an SSRI (less powerful, but emotional blunting may still occur) or change antidepressants altogether. Another treatment option for medication-induced blunted affect, is to augment your primary medication with something else (say wellbutrin or Abilify or remeron for instance), but I personally wouldn't recommend this option until everything else has been tried. Of course, if you can live without being on meds altogether, that is the best option. Some people can't though unfortunately.
Antidepressants can help when you're severely stuck in a temporary rut or an intense period of depression/anxiety (in which case you can simply come off of them, using a very gradual taper to reduce side effects and the possibility of relapse, when you're feeling better). Other's however, who endure extreme suffering from mental illness their whole life without it hardly ever letting up or giving in, may need to stay on them for much longer or indefinitely... Think about it like treating any other chronic illness like diabetes or arthritis. Unfortunately, imo, antidepressants are more of simply a crutch or tool to utilize rather than an actual cure. However, in a way, the same could possibly said for Insulin as well, for instance. But depression/anxiety can also have to do with lifestyle/lifestyle choices, your social circles/social support (or lack thereof), other illnesses, diet/exercise, past trauma, behavioral patterns, and thought patterns in addition to neuronal biochemistry...
also, realize that can simply people change over long periods of time, and passions/hobbies/interests can fade with that passing time as your experiences, perspective, and priorities change and multiply...
also, some people will use, sometimes unknowingly, music and the arts to cope (or escape) with a mental ailment/illness such as anxiety, or, depression especially. this goes for making art as well as consuming it. Once the depression and/or anxiety has been dealt with and fades, the drive to get lost in the enjoyment of creating or consuming art may fade as well... i used to be an artist, but no longer create like I used to. I don't experience near the same enjoyment consuming art either. Especially music, I hardly ever create or listen to it anymore. I believe there are many reasons for this, not just one (i.e. only meds).