- Synthetic cork is immune to cork taint, so wine is much less likely to spoil.
- Synthetic corks can be made more cheaply, and with much more precision, than cork.
- Depending on the vintner’s tastes, plastic corks can be made to look very similar to natural corks, or be moulded in any imaginable designer colour.
- Synthetic cork is recyclable.
- The same cork-removal equipment (along with its obligatory 'pop' sound) can be still used.
- If the trees used to produce cork are no longer used for that purpose, they may be cut down to make space for more lucrative crops, thus endangering the habitat of various kinds of wildlife and altering the local ecosystem in unpredictable ways.
- If not recycled properly, synthetic cork can pose a direct threat to the environment.
- They making the ritual of cork-sniffing unsatisfying.
- Plastic may not retain its elasticity well over time, making it unsuitable for wines meant to age for decades.