Because you have to. This is what you do.
Now you need a plan. Just because you're creative doesn't mean you don't need structure. There at least has to be some method to your madness; if not, then this is just a really expensive hobby. Here's a list of the top 6 things you can do right now to become a better photographer.
1.) Put a date on the calendar
An old friend of mine used to say "Nothing is real until the check clears the bank." While that's true for the end of the process, there's another way to look at it; "Nothing starts until there's a date on the calendar." To develop your skills you have to keep working at it and that work begins NOW. Tomorrow is for posers - today is where it's at. That means creating challenges and holding yourself to them. Brainstorm some ideas for shoots you want to make real, then put a date on the calendar and go get it done!
2.) Get organized
Gear, release forms, cables, batteries, speed lights, models - it doesn't take long for all of that to get really, really disorganized. To create better work, you've got to pull your shit together. Organize your camera bag, check your gear and throw out those old batteries that will inevitably fail at game time. Open up a word doc or start a fresh page in your notebook with the names of all the models, makeup artists, assistants and friends that will help you - then apply that list to step 1.
3.) Build relationships
When you're on a shoot, you're in contact with people who can help you in the future so make sure you make a great impression! Be professional, be polite, ask opinions and let the other creatives that are there with you take some ownership of their part in your shoot. Don't hide behind your camera - direct the shoot! Just be nice and make sure that when it's all said and done everyone walks away feeling like they had a great time. This will pay off down the road - trust me.
4.) Accept only the best
When you sit down to go through your work, throw out anything that doesn't fall into the top 10%. Don't literally throw it out, but only deal with your best work. Best is a subjective term but you know what is good and what is schlock - don't waste your time. Get down to brass tacks and focus on your top photos, then figure out what you did RIGHT and try to duplicate that success next time. The goal should be to reduce the total number of photos you have to shoot to get "keepers." There's a poetry in the random quirks that can make happy accidents happen on a shoot but we're not in the 'happy accident' business, we're in the 'shooting cool sh*t' business.
5.) Show people
It takes two things for art to exist; someone to create it and someone to experience it. If a photographer takes a picture and no one ever sees it, did it really happen? Unless you're doing this for your own personal satisfaction, you've got to put your work out there. That doesn't mean Facebook, although that's a start. Get it up on your website, update your printed portfolio, plan a gallery show and PUT IT ON THE CALENDAR, enter your work into an art competition - whatever it takes, make sure your work is getting seen. That's where the payoff for all your hard work lives. That's where future opportunities come from.
6.) Get Better
Don't strive for perfection, strive for progress. Perfection is an illusion, progress is real. You shouldn't ever be satisfied with where you're at in your career - there are always opportunities to improve. Working with people who've got more experience, assisting on shoots with other shooters, pouring over the work of different photographers - all of these things are key to breaking out of stagnation. Keep mixing it up, keep working, keep improving. Down the road you'll look back and see the progress of your work and it will melt your brain.
Thanks - now go shoot something.