Happy 4/20! Thoughts about this particular day

I know many people who disagree with the use of marijuana and who dislike this particular day.  What are your thoughts about this particular day?  

If you're an individual who looks forward to this day, why may that be?  What makes it any different from smoking any other regular day?

What makes this day so special that it needs to be a celebration?  I don't have a problem with this particular day but I never really understood to why it is a day of celebration.  I believe if you're a marijuana user, you would smoke as you normally would.

It is also to be said that the use of marijuana cures many diseases and it is a medication that should be used as substitution for all other medications.  What are your thoughts about that?