Everything in the world is relative.
For some, spam mails are annoying and try to filter them off the mailbox as spams usually associate with unsolicited sales or phishing attack.
But for others, spam are considered as valuable resources. Honeypots are setup to collect spams, analyze and understand the trend, the TTP (Tactics, Techniques, and Procedures) of phishers in order to bring up awareness and counter-measures.