service@domain.tld won't actually prevent spam, it will just give you the grim satisfaction of knowing which service leaked. I used that pattern for a few years and the only thing it was ever really useful for was figuring out that a service I signed up for years prior had changed their name or used a third party service to handle portions of their site features.

If you're careful about what you sign up for, spam shouldn't really be a concern. The places you're most likely to get spam from are your contacts email getting compromised, sketch online services that go out of business, and big services outsourcing marketing. Just be sure to religiously unsubscribe from any promotional materials because the longer your email remains contactable on a list, the more likely it is to be shared/sold by some shitbag marketing firm.