They have jobs for life, aren’t affected by redundancy, lack of money and now the unions are jumping on the bandwagon.
Teaching is not always that secure these days, subject depending.
Teaching staff also include many lower paid staff - TAs, maintenance, admin assistants, cleaners, etc.
Teaching staff may well be clinically vulnerable but are being expected to teacher in unsafe (covid wise) environments.
Believe me it was for more stressful working from home and I did far longer hours, including over 3 weeks of unpaid holidays, during the last lockdown.
I wasn't in as I am vulnerable but the vast majority of our staff were teaching FT from April to July with full bubbles of key worker and vulnerable children.
Most teaching staff do NOT want schools to close. They just want things to be a bit more safe. Over crowded, poorly ventilated rooms full of children with no SDing and no protection simply isn't safe, especially for the adults in schools.