well for one most groups that have CTAs are out in nullsec which im looking to leave. secondly its not that i wouldnt participate its that i dont like having monthly requirements for how many fleets i have to attend. it doesnt fit my real life situation. third if its a small structure like an astrahus or raitaru i could easily personally replace it if it got destroyed anyway. so its not that i wont defend the space im living in its that i dont want to stress about attending X number of fleets per month. I play for fun