Favorite thing about this hobby

[Lt.]

What is you favorite thing about this hobby? I thought this thread would be a good contrast to a similar thread about the most annoying thing in this hobby. I'll start:

My favorite thing in this hobby, is watching schooling fish (like my Rummy Nose Tetra) swim around in unison so gracefully.

 

[Spechty37]

My favorite thing is keeping my water perfect

 

[shellyx]

My favorite thing is watching my fish grow and mature!

 

[brennae]

I rather like watching the plants grow and the fish are nice too!