Larry,
Unless you are going to 'build' interactive applications or will be working from home on said same interactive applications I don't know of a good reason to acquire Lotus Notes.
My exposure to LN was also at my last place of employment and it was installed on an IBM AS400 system for creation of sales reporting and data acquisition programs.
It's not something to 'get' just to 'have' (personal opinion
) It's just too large and unwieldy a piece of software.
That being said, IF you have a specific need/purpose for it who am I to discourage...
Bob K. rnkiii