No, Basteri, you're apparently not alone. I don't know Opium personally (I'm sure I've smelled it, as it was once apparently fairly ubiquitous, but I'm not sure I could identify it), but Luca Turin seems to agree with you. Here's part of his (five star) review from Perfumes: The Guide (pp. 269-270):
(Just to be clear, this review is of Opium, not Opium PH, which LT simply dislikes.)[Opium] is unquestionably one of the greatest fragrances of all time, not only in terms of phenomenal success, but in having deserved it. Yet I would hate it if anyone wore it near me today….Opium said one thing, and one thing only with tremendous force. This, and not the quality of its raw materials, is what made Opium smell so fascinatingly solid in 1980 and now makes it smell tiresome.