Not knocking against personal experience or anything, but it might be a good idea to note that the US census reports 45.2% of legal adults are unmarried. So 54.8% are married, and then some amount of additional people are unmarried but in relationships. Not to say all marriages end up happy and loving, but somehow people are ending up as couples together. We can assume that at least some portion of those marriages are based on partner satisfaction and love. There are so many successful marriage stories out there. And even tho nearly half of marriages end in divorce, that doesn't mean the couple didn't feel love toward each other at some point during that relationship.
And more than that, love isn't just romantic love (although I assume that's what's being discussed here). Nor do I think love is a static thing. It's not exactly something that just happens to you. Anyone in a successful relationship will tell you that love is an action; it takes work, and it's an ongoing process. It's an illusion only if you think it will come out of nowhere and fall in your lap.