Thanks for sharing your feedback about this.
As cloudheaven090 said, we did offer unlimited goodybags a few years ago but unfortunately, had to change it as it was being exploited by some members which made the general experience of our giffgaff members not a very good one.
We want to make sure all our members have a good experience with the amount of data we have available to our network and make sure it's being treated fairly.
'Always On' is 80GB of UK data followed by the reduced speeds during peak times & full speed again off peak. In theory, if it is used fairly, it will feel like unlimited data - you just get slower speeds in the evening and that is designed for the benefit of everyone on the network.
However, if we did consider reintroducing unlimited in the future, we will be sure to let our members know well in advance.
I hope this clarifies things and do feel free to pop me over a message, if you fancy chatting about this further.