I'd say it's a boon. Look around you and imagine that all the plastic vanished instantly. How many things that you and I take for granted would vanish with it? A whole lot huh? Including the computer you typed your question on. Some people would drop over dead as they have artificial hearts made of plastic.
Televisions can be considered to be boon and not curse.
Robots are a boon if we utilize it properly, and a curse if we do not.
Fashion can be boon for some. For others it is a curse.
A "boon" is a "benefit" or "bonanza"; in this context, a curse is the opposite.
it can be both a boon and a curse,it depends on how we use it.
a boon
I would say both, but mostly a boon because although it can be damaging to the environment if it is not disposed of properly, it is also a very useful material and can mostly be recycled.
BOON
I like them - so I vote boon.
it is a boon as we will have many chances to learn also.
It can be both a blessing (boon) and a curse (bane).
It is a boon for AYUSH medical industry.