To my own believe and understanding ,musing simply doesn't have that much steem power to share out amongst its members. So what they do is simply upvote the comers in other to keep them motivated and any of the old ones that are still remaining might get an upvote one or two times.
So chill, it not as if you answers are trash it's just that they try to encourage new members to keep asking or answering questions. We can also stop this by delegating SP to them so that it can at least their upvote will go far a bit.
Another way to prevent seeing no votes is if we at least also partake in voting and not leaving the voting for the work of just the community leaders. If you see an answer that makes sense, simply give it an upvote. It might not mean something to you but to the author, it means alot.