Digitally downloading music, legally or illegally has now become the norm, I think I would be right in saying.
I myself, am a fan of the physical copy. I love the experience of walking into a record store, picking up an album, and I love being able to go home, put it on and listen to it from start to finish, while looking at the cover, admiring the artwork, reading the leaflet and reading the lyrics inside. I love putting it in my case along with the rest of my collection. I don't have a very large collection, but here it is anyway.
My fear is, with my growing collection (and I do plan on it getting much, much bigger in years to come) that I won't be able to buy cds in 20, 30, 40 years time, that record companies will be making too much money strictly on downloads through the likes of Amazon and iTunes.
We also have to consider that these days, buying music on vinyl is coming back into popularity, mainly with very big music fans who are willing to shell out a lot of cash for the record players, and vinyls themselves, where available. Here in the UK, the average price of a cd is about £10 or £11, whereas the same album on vinyl would be twice that. I have even seen albums that are £50 to £100, or even more on vinyl, as they are a special release, or a limited number of copies have been made, say.
Although, nowadays, with music in the first place being recorded digitally, it will usually sound better on cd, or even slightly better in some digital formats. All this obviously depends on what sort of hardware you have. Likely whatever the format, you won't be able to notice much difference in sound quality if you haven't put a lot of cash in buying a decent amp and speakers for example.
Maybe, in the future, (as it was suggested to me by @theronster on twitter) actual lossless quality audio will become readily available and everybody will be buying into that.
But, setting aside the whole issue of 'what is the best possible quality of sound?' I for one, hope that record companies will keep releasing their music on CDs for many years to come. I wish I had a collection like Rob Gordon, in one of my favourite films High Fidelity.