And that's why I mic.
There is no DI in the world that sounds as good as a well made cabinet.
Errr... That doesn't ring as true to me, though you may believe it at jihadi level. See I actually like the sound of my basses. I don't need the amp to be happy. When I practice at home, the majority of the time, I'm direct into the board using a set of phones or my 2.1 setup to monitor. Add a U5 to the mix and Katy bar the door, damn that sounds good to me. If I need effects, I can either use the time based stufff on board, my pedal board or one of a few favorite 'hair-comps' like the Durham SexDrive or Compulator. Sounds awesome to me.
My mb-fusion and fEarful rig does a nice neutral plus a mild scoop. Makes a great monitor and with a couple of kw181's under k12's out front, it just doesn't need to work very hard. So I can dial in whatever eq sounds good to me on stage and send the direct to the board from the radial on my pedal board... Out there at the board there is a 4 band semi parametric, a comp/limiter and an hpf dedicated on each channel and a 31 band graphic on each output, so plenty of room to address venue issues.
...and if I mic those Ampeg 4x10's, I'll spend a ton of EQ fixing them. As 40 feet away, they sound nothing like they do 16 feet away. And that nice juicy tone that someone painstakingly dialed in, has turned to mush. This is why if we mic, we also have the DI... We can use it to restore some punch... I am a bass player. I listen with bass player ears. In my little operation, we architect the low end and build on that... Has the additional advantage of making the guitarist go whut?
If you have the time, the impetus... Find a local sound company, develop a relationship and maybe do some grunt stage handing. Sit with the FOH and side stage guys - if we know you, we don't generally bite - unless the substance is rolling down hill and you are in the way.. situational awareness as my Marine buddies say... Give them a few songs to settle in amd then observe and listen. If the guys are good, you will learn a ton. There is a cost to education. In this case it is your time. If you aren't a jamoke, you'll probably be on the payroll come festival season when we are cash rich and back poor ;-)
And or course we make both of the bucks we get so they can keep each other warm... It is a labor of love... Damn rewarding when you get the right band on the right night in the right place... I did one show last summer that was transcendent. The glow of that one is getting me over the indoor winter season...
There probably are lazy sound guys, I just don't happen to know any... I do know a couple whose mixes I disagree with but they are codgers with blown ears 4k and up so they mix brighter than I can stand... They've been at the game too long, need to retire from the board and move on to stage manager. Lazy they are not...