Stopped carry tubes years ago. Im sure to be flamed but its based on running tubeless experience since 2010. If you set them up correctly and change or top up the latex regularly you will be puncture free. Small punctures, spin the tyre so latex goes to the hole and pump up. Bigger holes use the patch kit, its easy to use and you dont need to remove tyre so its very easy. Follow the instructions in the kit, they are worth reading to do the job correctly. The patch kit is worth carrying as is pump.
When you fit tyres and latex give them a good spin to get the latex around the tyre. Pump up to 40 psi and leave over night. Reduce pressure to 20 psi, go ride. The tyres will crack in to place. This ensures you dont burp them and they are correctly seated. I also change/wear out tyres regularly but old tyres will puncture more regularly. I use Maxxis, pretty bomb proof.