blissful ignorance

• naivetyInnocent lack of experience
• obliviousLacking any awareness
• carefreeFree from anxiety
• innocenceFreedom from wrongdoing
• unawareLacking knowledge of something

sheltered · denial · rose-tinted · bubble · clueless · blinkered · paradise · fool's · idyllic · dreamy · untouched · protected · cocooned · heedless · blind · comfortable · unconcerned · shielded

• naivetenaivety, naive, innocence, gullible, gullibility
• naivetygreenhorn, newbie, tenderfoot, raw recruit, born yesterday
• mental statesknowledge, conscious, mood, anxious, memory