Don't think with my mere 8 MVEST of total vesting power between my two main accounts any of the witnesses will care about losing or gaining my witness vote. But I still feel I need to give a word of explanation to witnesses I supported for good reasons.
It's the EIP. I am pretty much convinced the EIP is going to turn STEEM in a hostile place for new accounts and active content creators like myself. So, while I still support the good work you guys are doing for the platform, at this moment in time I feel my witness votes shouldn't go to any of the witnesses that have communicated their full support for the EIP.
Have a look at recent posts from my @mattockfs account to get a grasp of what is fundamentally wrong with the EIP and what could be done to begin to fix it.
For others reading this also concerned about the EIP. Off the top 20 witnesses only @yabapmatt voted against the EIP in a recent poll. Outside of the top 20, @drakos (21), @kly (78) @krnel (96) and @pjau (99) also voted against.
Of the top 20, @anyx, @thecryptodrive and @themarkymark) have expressed their partial support, so check out the poll. 15 other top 20 witnesses all voted YES for the EIP.
Use this information for your own witness votes as you see fit.