Why do my reptile heat bulbs keep burning out so fast?

Verified-purchase reviewers on Amazon and Chewy and commenters in r/reptiles and r/Chameleons frequently flag premature burnout as the dominant complaint across nearly every brand — Fluker's, Zoo Med, and the no-name Amazon brands all draw the same criticism. Common causes cited are vibration (clamp lamps swinging), running bulbs on simple on/off thermostats that cycle them constantly, and using bulbs in the wrong orientation. Dimming thermostats and a dome with a secure mount typically extend bulb life noticeably.