- Price of a good DL burner compared to a SL recorder. (Now the gap is much smaller).
- Price of a DL media compared to a simple +/- R. (Gap is huge).
- Question of quality is always a subjective matter. I personally don't see any diffirence comparing any of my originals and their backups. (Depends on the software you use).
- Time/Speed factor is also relative. If you can make a backup let's say as an average in 20 minutes from point "0" to the final result, then it is not a big deal.
Remark: there is nothing wrong with my eyesight. I just prefer watching movies and avoiding counting pixels.
Answer to your question: yes, it is possible.