One thing I am never out of is hope, nor should anyone be

I am saddened to hear of your loss and I understand your frustration and anger.  However, I would point out that even though glioblastoma is indeed a very difficult, deadly and aggressive form of cancer there nevertheless are people who have beaten it.  Granted that the number is small - almost non-existent when it comes to mainstream treatment, but it has been beaten nevertheless.

You say that you pursued all the options avialable, and I do not doubt that you made  a valiant effort to try as much as you could in the time you had; however, I must point out that there are over 350 different alternative protocols and no one has ever come close to trying all of them.  That would take about 30 years to do if someone only followed each protocol for an average of one month, which is far too short of a time for most of the protocols.

Did you try, for example, an oleander based protocol and try it before mainstream medicine had inflicted too much damage and allowed the cancer to spread?  In addition to being a very aggressive cancer, Glioblastoma is a cancer that is not normally recognized by the natural immune system and it is resistant to items which cannot cross the blood-brain barrier - which is something oleander does,.  Though certainly there is no guarantee, some of oleander's most noted successes have been against brain cancers.

I would also point out that the chances of virtually any alternative treatments being successful are much greater if they are pursued before mainstream medicine's treatments, which does almost alway fail with glioblastoma, have done all of their damage while the cancer has continued to spread.

If you had somehow been able to follow an oleander protocol or some of the others, maybe nothing would have worked anyway - but there is really no way of knowing that with absolute certainty.  Just because the things you tried did not work does not mean that there is nothing which might work.  The fact is that if even one person ever beat glioblastoma then it is in fact beatable.

While you might consider it heartless to hold out hope, I would consider it heartless to tell anyone that there is no hope, because there is always hope.  And I continue to tell people that there is hope and continue to maintain that there is no such thing as an unbeatable cancer - simply because there is no form of cancer which has not been beaten by some people.