No problems here pumping oil out over the past 4 years and about 80k miles.
The pumping method also allows you to suck oil from the filter housing and all the little nooks and crannies, and obviously the end of the tube can be poked and moved about within the sump to get any corners or pockets of oil that might be sat there.
I go with the ethos of buying my own oil and filters for about £30 a shot and doing it twice as often (5k miles) than paying £60 for someone else to do it.
But hey each to their own. If you have the facilities to jack the car up place axle stands, remove under tray, remove drain plug, fit new drain plug, replace under tray and remove jacks then go for it, some people are limited to the road outside or whatever.