Penis envy is a strange thing; and it seems to be something that affects photographers particularly...
There's always something lacking with the equipment you have...
There's the "I don't have one of those" type of envy.
Be careful of this one. If you've never had "one of those" it probably means you don't really understand all of the consequences ownership comes with. At the very least you'll probably also have to buy some other specialized stuff to store/carry/clean it correctly. And even if you know what it does, that doesn't mean you know how to use it to best effect...
There's the "color bias" type of envy.
The perceived need for the "professional White (L) Version." Paying for professional is really expensive... And quite often a regular version will do the job just as well.
And then there's the "embarrassed at the public shower" type of envy.
The "mine's not big enough" or "his is bigger" thing. It's not all about size. It's about picking the right tool for the job (at least that's what I've been told).
Bigger is; well, big...it gets in the way, it's heavier to carry... it can be a real pain.
BUT, there are some good reasons for penis envy.
Maybe your equipment only works well in bright light...
That's just weird!
You definitely need equipment that also performs well in low light situations. It would probably be even better if it could perform well in the dark.
Maybe your looking for something you will keep for a long time.
If you want a long term relationship, then you probably need something with the ability to focus on only one thing. And it needs the ability to maintain that focus in tough situation.
And if you are chasing birds size really does matter. (regardless of what she says)