Never played Burning Crusade before. Will I like it?
Started playing WoW officially during Cataclysm, which was also the first expansion I did endgame pve and pvp in (I did way more pve). I had also stayed for Mists and started to main Alliance instead of Horde because my real life neighbor mained Alliance. As far as Warlords went, I unfortunately only played it for about a total of two months before quitting retail altogether. Throughout my entire time in Retail, I had mained a Balance Druid for PVE and Feral Druid for PVP. Retribution Paladin was my second most played class for both PVE and PVP.
Currently I am playing on Icecrown and it's been pretty damn decent so far. I'm not usually a fan of PVP servers, but overtime I've started to accept being a victim of ganking/camping as an inevitability on here because the endgame has been pretty interesting for me overall. I currently main a Retribution Paladin on Icecrown, but that may or may not change soon.
All that being said, will I like Burning Crusade? My cousin used to take part in PVE on that expansion and my old neighbor used to take part in PVP very religiously as well and they seemed to enjoy it.