[Lovecraft's] parents both suffered from mental illness (his father's was possibly syphilitic in origin) and as a teenager he endured a nervous breakdown that interfered with his schooling and any conventional socialization. He was tall, thin, pale and extremely bookish, the pet and the target of a mother who was both smothering and critical, particularly of his physical appearance. A brief marriage to an older woman eventually fell apart and after a disastrous try at living in New York, he retired to his native and beloved Providence to live with two elderly aunts.
Now doesn't that tell you everything you need to know about the man, and what kind of fiction he'd produce? Doesn't that sound like every other wannabe scifi/fantasy (fan)writer I know? Doesn't that perfectly describe the lives of the bulk of Lovecraft's fans--guys living in basements with cranky elderly mothers, writing dark navel-gazing fiction about the horror and futility of life?
Thus endeth my feelings of inadequacy for never having read him.