Yes you play "how you like best" BUT strangely enough the best PVE quests as well as almost ALL of the best loot are in Cyrodil and if you cannot handle PVP then you are totally screwed and the PVP gankers ruin yet another game.
ESO is NOT a true TES game: it is a PVP MMO packed onto a TES framework to fool the real TES loversand nothing else
Within a month the better PVP guilds will have the best loot and all 50 lev chars.
Within a year they will be playing the next PVP MMO and will have deserted ESO like they always do, leaving behind the dedicated PVE TES lovers who are used to being short shafted in MMOs.
Then, if there are enough of them, ESO will relax its PVP svcking and perhaps allow some safe areas in Cyrodil.
But they had better hurry as even PVE playes are not infinitely patient.
This game is yet another game aimed at dragging out parental money and set primarily for those still at school as most advlts once they hit PVP in REAL LIFE suddenly find it distasteful.
But the 12ms cable kids who can kill you before you even see them will have turned Cyrodil, despite its riches , into a no man's land: or an adolescent' gankfest