Tourist Visas: Should You Apply Again if Your B1/B2 Application is Refused

I am an independent freelance software developer, working out of an office in Goa, India. I have been freelancing full time for a software company (lets say 'X') based in California with an IT team based in Seattle, Washington for the past 4+ years. I have hired another freelancer and mange him for this company. Even my office in Goa is actually been paid for my this company.
This company X has annual company retreats, where all the people associated with it come together for a week and spend time together, this year I was invited to join the retreat to be held in September 2017 in Idaho California. I applied for a B1/B2 Visa and my interview was last week. this is how my interview went:
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VO: What is the purpose of your visit?
Me: My client has invited me to the company retreat and a series of meetings with the IT teams.

VO: So you are going to Washington..?
Me: Yes, the IT team is based in Tacoma.

VO: Have you traveled Internationally before?
Me: No I have not.

VO: Are you a software Engineer?
Me: yes.

VO: Sorry, I cannot issue a visa this time. (handed me a 214(b)).
Me: Can I apply again?

VO: yes sure you can.
Me: Ok, thank you.

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This is a little about myself:
- I am 26 years old, unmarried, from Goa, India.
- Living with my Mother and sister
- Monthly income about 2lakhs INR
- I am an inventor on a patent for this company, another application is in process
Honestly have no intent to migrate or work illegally was just visiting to meet the people I have been associated with for 4 years.
Any ideas what went wrong or could have been better? should I apply again or is it just a waste of time?

Tourist Visas: Should You Apply Again if Your B1/B2 Application is Refused