Connecting dryer to dryer vent
Your dryer venting properly is a good thing - as long as that is happening you should be fine. 


  fire hazards more from lint catching on fire


TRUE.

Clean the LINT out of your dryer after every load - every so often clean out the lint system on your dryer to keep the dryer clean.. I have cleaned my lint system probably 4 maybe 5 times in 20 years.. a good working lint system and you should not need to do it very often. Your dryer will last longer and work better as well.