This is 100% true. You'll absolutely fall in love with that titanium bike. You're friends and family, and strangers on the street will grow tired of your constant blathering about ride quality. You'll frequent all the titanium threads here, and soon get banned from all the steel is real and carbon is [insert whatever carbon is here] threads.
But the hook is "lasting forever" is not the same as "the last bike you'll ever buy".
When your frame cracks for no apparent reason and you're demi god frame builder washes their hands of you you'll be so embarrassed that you'll walk away from cycling forever. No more bikes for you.