Getting ready to flash and have a few questions

[mulhiny]

I've been reading the forums here for some time and I think I'm ready to give flashing for the first time a go. I just was wondering about a few things. I currently use the stock Sprint Rom with all the battery tweaks I've found here. Thing is, I really have no problems with my phone. I mean, battery life could be a little better but over all the phone works nice and smooth and never have I had to hard reset. So, my question is..before I flash to a new rom (I was thinking Mighty's) do I really need to?? Will I see any real difference? Is flashing done out of need or more just because we can? Any input would be great. Can anyone using this rom or any other for that matter weigh in on this? Maybe a before/after type of input?

Thanks in advance,

Mulhiny